HVAC Assignment

This assignment provides detailed information about HVAC system, including indoor and outdoor design conditions, zoned air-conditioned area, building peak heat load, and more. It covers topics such as human comfort, zoning in HVAC systems, internal heat loads, occupants, lighting, equipment and appliances, and more. Find solutions to your HVAC assignments at Desklib.

Running head: HVAC ASSIGNMENT 1
HVAC Assignment
Firstname Lastname
Name of Institution

HVAC ASSIGNMENT 2
Table of Contents
Table of Contents.............................................................................................................................2
List of Figures..................................................................................................................................3
List of Tables...................................................................................................................................3
Abstract............................................................................................................................................4
1.0. Task 1 Indoor and outdoor design conditions.......................................................................4
1.1. Indoor Design Condition...................................................................................................4
1.2. Outdoor Design Condition................................................................................................6
2.0. Task 2- Zoned air-conditioned area......................................................................................7
3.0. Task 3 Building Peak heat load..........................................................................................10
4.0. Task 4 - Building Peak cooling Load.................................................................................10
4.1. Internal Heat loads..........................................................................................................10
4.2. Occupants........................................................................................................................10
4.3. lighting............................................................................................................................12
4.4. Equipment and appliances..............................................................................................12
4.5. Solar Heat loss through glass..........................................................................................14
4.6. Heat Gain and Loss through Floors and Walls...............................................................15
4.7. Heat gain and loss through roof and ceiling...................................................................15
5.0. Task 5- Air conditioning system.........................................................................................16
6.0. Task 6 -Sustainable HVAC system....................................................................................22
6.1. Energy Efficient Active HVAC system..........................................................................23
6.2. Energy Efficient Passive HVAC system.........................................................................24
6.3. Existing Building Potential.............................................................................................24
Bibliography..................................................................................................................................25

HVAC ASSIGNMENT 3
List of Figures
Figure 1: Operative temperature versus Clothing Insulation...........................................................6
Figure 2: Zoned-air condition area..................................................................................................8
Figure 3: Diagrammatic Illustration of the zoning directions.........................................................9
Figure 4:Exterior illustration of an efficient active HVAC system...............................................23
Figure 5: Efficient HVAC system.................................................................................................24
List of Tables
Table 1: The biochemical speed proportion standards....................................................................5
Table 2:standard of total heat increase from the residents and proportional.................................11
Table 3: Design calculation of the HVAC.....................................................................................20

HVAC ASSIGNMENT 4
Abstract
The HVAC system is arguably the most complicated system mounted in a construction but is
liable for a significant function of complete home energy need. The optimal satisfaction should
be provided by a correct-sized HVAC system and will made more efficient. The correct size of
an Air conditioning system is facilities quality and air distribution configuration
1.0. Task 1 Indoor and outdoor design conditions
1.1. Indoor Design Condition
Developing the industrial sector and scientific methods and rapidly improve the quality of life
and the other Gulf countries, people became aware of the significance of the heat atmosphere as
well as the need regulate it. In the matter of fact, constructing air conditioning now accounts for
a large share of energy storage consumption, and layout virtualization of this running water is
becoming more essential. Throughout this reference, the initial step is to pick the best the perfect
conditions for internal and external building structure. Such styling requirements are essentially
becoming taken in compliance with ASHRAE's suggestions. The correct way to choose these
design requirements is by taking into consideration the precise location's environmental and
economic determinants.
Aspects of Human Comfort
Several ecological and ordinary personal factors influence human convenience. External
variables include air temperature, average luminescent temperature, selective heat and upper air
velocity. Body temperature and apparel are predominantly the person variables. The last two
variables have always been the topic of many other researches and a few phrases about the other
could be helpful.

HVAC ASSIGNMENT 5
The level of metabolic rate depends on the amount of endeavor and is demonstrated in bases of
happened to meet. One meter is the physically active activity respiratory speed (1 meter=
58.1W / m2). The table below here provides the biochemical speed proportional standards.
Table 1: The biochemical speed proportion standards
Garments segregates or provides heat flow thermal resistance between both the body and the
ecosystem. This is indeed a clo value (1 clo= 0.155 m2 ° C / W) for this heating. Figure below
explains the connection for both temperature changes of safety and seclusion of clothing. For
regular clothes, Seppanen and many others (1972) performed a purposeful independent inquiry
of heat thermal insulation principles (TIV). The technique always had to obtain the clo value
information associated reconstructing the separate compositions and monitoring each one with a
heated mannequin of metals. Sprague and Munson (1974) merged the standards of clo for person
fabrics and delivered the preceding equation for calculating the value of clothing for a
comprehensive orchestra.

HVAC ASSIGNMENT 6
Figure 1: Operative temperature versus Clothing Insulation
1.2. Outdoor Design Condition
The evolutionary system is based on the assumption that indoor convenience is affected by
outdoor climatic conditions since during different points in time of the year citizens can conform
to different temperatures. The evolutionary theory foresees that qualitative considerations
including such significant exposure to environmental regulations and past high temperature
history can affect the high temperature standards and priorities of construction occupants.
Numerous scientists around the globe have performed field research through which they study
the thermal solace of construction inhabitants while continuing to take environmental readings.
Analysis of the findings of 160 of these buildings revealed that inhabitants of naturally isolated
homes acknowledge and enjoy a broader heat variety than their peers in safe, heat-conditioned
homes even though their expected heat appears to rely on external environments These findings
have been introduced in the ASHRAE 55-2004 norm as the evolutionary convenience model The

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growth curve applies to the current outdoor temperature indoor convenience and determines
areas of 80% and 90% fulfillment
The ASHRAE-55 2010 Requirement launched as the optimized designer's interface factor the
prevalent mean outdoor temp. It is centered on the calculation median of the mean day-to-day
outdoor temperature changes over no too little than seven days but no more than 30 synchronous
months prior to the day before. It could also be determined by measuring temperatures of distinct
parameters, rendering the latest humidity levels increasingly valuable. When this measurement is
being used, the upper bound for the days that followed was not to be recognized. There would be
no technical coolant pump for the room in order to implement the evolutionary system,
inhabitants should participate in physically active activities with metabolic processes of 1-1.3
met, and a dominant mean infection superior than 10 °C and less than 33.5 °C (92.3 °F).
This system narrates in general and specially to inhabitant-controlled, artificial-conditioned
rooms where the outdoor climatic conditions can influence the indoor conditions and therefore
the comfort level. In reality, researches demonstrate that inhabitants were open and accepting of
a larger temperature range in naturally temperature-controlled houses. As there have been
various types of evolutionary methods, this is attributable in both cognitive and physical
improvements. ASHRAE Level 55-2010 asserts that discrepancies in current thermal feelings,
alters in garments, quality of additional options and adjustments in occupant preconceptions can
alter the heat emotional responses of individual people.
2.0. Task 2- Zoned air-conditioned area

HVAC ASSIGNMENT 8
We all know that the entire aim of a HVAC system should be to afford and reserve a supply of
cheap air quality within the building through both the filtering, insulation and remote monitoring
process. In brief, the prerequisite of an HVAC system is everywhere in the house to provide
required radiative solace. But it is always seen that not one of the structure's "areas" are
monitored equitably. This means that in rooms in which there is sustained heat deviation, there
are many places. A few of them are hot, many chilly. Many such discrepancies in radiative loads
are to be regulated not only to the building's thermal safety, but also because of savings on
energy bills.
A zone is especially the area of that same construction that is continually susceptible to heat load
variability. For example, the regions near the window which are under continuous changes in
temperature due to sun thermal variability. It could also be many indoor areas including a
subterranean store or a huge utility room from which solar radiation and temperature cannot
really be easily managed and the area's physical temperature is once again minimal. A house
might also have one or maybe more zones. The proportion of monitoring equipment reduces as
the proportion of zones boosts. Both those houses have numerous zones today
Figure 2: Zoned-air condition area

HVAC ASSIGNMENT 9
Let us just make an effort to understand zoning in houses of HVAC system. We first have to tell
what solar gain is for that first. The building's convection varies depending on both the heat from
the sun. The transition in high temperature loads is regarded as the solar gain due to differences
in the sun's stance. Trying to understand how photovoltaic gains amount to zoning tends to leave
our scenario
Figure 3: Diagrammatic Illustration of the zoning directions
Possibly we have a really property for the HVAC mechanism the names and addresses have
always been delivered as can be seen in figure to the residences or zones in the structures. We
would learn to understand the zoning deciding on either the series of heat and the acceleration of
just the sun. The weather is expanding all across the region Nevertheless, the south walls will be
accurately built up by the sun during much of the midafternoon days straight. Consequently, both
the NE and SE regions would have been at an elevated heart rate than the remainder of the

HVAC ASSIGNMENT 10
construction demanding further adjustment to keep the full house environment at one
temperature and strain.
As the early morning hours move forwards to midday, the heat load on NE and SE will
significantly reduce and the house's internal element will also be understanding the very same
thermal load as NE, SE, NW and SW. Thus, the same amount of refrigeration capability will be
mandated for the entire house. Now that all the sun is moving west throughout the afternoon, the
NW and SW zones are supposed to go under immediate solar profit and thus need more cooling
than that of the other zones. Thereby, the wind speeds of the control areas are controlled and
maintained probably depends on the solar increase.
Controlling the zones
Typically, the heat of these zones is regulated by detectors. Often, a zone does have its own
unbiased HVAC system (but in practical terms this is not typically witnessed). Every other zone
does have a water heater that has its own. Zone regulation varies depending on the necessary
level of space heating. The temperature probe-based actuators necessarily provide all the amount
required of temperature control.
3.0. Task 3 Building Peak heat load
4.0. Task 4 - Building Peak cooling Load
4.1. Internal Heat loads
Inner loads consist of tenant loads, lighting, equipment and appliances, materials stored or
procedures carried out throughout the vapor barrier
4.2. Occupants
Owing to residents, the inner cooling load takes the form on both delicate and latent heat
materials. The level by which sensitive and unexpressed temperature difference occurs depends

HVAC ASSIGNMENT 11
largely on the occupants ' demography and caloric expenditure. Even though a percentage of the
temperature diverted by the residents is in the sort of rays, use of a Heating Load Factor (HLF)
ought to be identical to that used for exterior sheathing radiation convection. Therefore, the
calculation provides the reasonable heat transfer to the condenser coil due to the residents:
The board below shows the norms of the inhabitants ' complete thermal rise and the percentage
of critical thermal benefit as an operation aspect in an air-conditioned room. It should always be
observed, moreover, that the portion of both the total sensitive thermal gain varies depending on
the indoor ecosystem situations. If the indoctrinated space temperature is larger, then the critical
fraction of total thermal gain and deep-seated thermal gain reduces, and vice versa.
Table 2:standard of total heat increase from the residents and proportional
Activities Heat Gain measured in
weight N
Practicable temperature
rise sector
Activity of sleeping 80 0.85
Settled, silent 150 0.65
Standing Instance 185 0.45
Walking at speed of
3.5 mph
315 0.40
Office Duties 200 0.60
Teaching activities 150 0.55

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Activities involving
industrial work
250 to 550 0.40
4.3. lighting
Natural light attaches critical warmth to the sump tank. Since the material removed from the
illumination consists of both radiation and thermal transfer, a heating load factor counts the time
lag. The thermal force owing to the illumination is therefore given by:
the utilization variable makes up for any lights that are mounted but not moved on when load
computations are held out. The sump variable needs to take into account the load inflicted on
fluorescent lights by inverters. Of fluorescents, a typical sump factor value of 1.25 is taken,
whereas for compact fluorescents it is equal to 1.0. Depending on the number of hours after light
is turned on, the type of light fixtures and the running days of the lamps, CLF standards are
available on the web of rows in ASHRAE manuals.
4.4. Equipment and appliances
In the condenser coil, the device and equipment used can add alike sensitive and latent loads to
the ridge vent. Once more, radiation or otherwise conduction might be the sensitive load.
Thereby, due to machinery and equipment, the inner sensitive load is given by:
the mounted wattage and utilization factor depending on the type of machine or facilities. The
HLF values are accessible in ASHARE manuals in the type of tables.
The latent load due to utilizations is specified as:

HVAC ASSIGNMENT 13
The load is in the sort of delicate convection for other machinery such as computers, printing
presses, etc. and is estimated predicated on the rated power consumption. As the convective
convection from this equipment is typically negligible due to the lower ambient temperatures, the
HLF value for these facilities can be taken as 1.0. Whenever the equipment is run by electric
motors that are also kept inside the conditioned air, scrutiny must be provided to both the
productivity of both the motor. Even though the assessment of the heating load due to the
machinery and machinery seems to be straightforward as given by both the equations, a great
deal of ambiguity is launched due to the consumption factor and the discrepancy among rated
(nameplate) full-load energy consumption and overall part-load power consumption. Calculating
the use of name plate power input may result in load exaggeration if the machinery much of the
time is operating under partial load circumstances.
If the indoctrinated space is being used to store products (e.g. cold storage) or to perform those
processes, otherwise the sensitive and latent heat published by these specific products or other
procedures should be introduced to the inner cooling loads. In air conditioning and refrigeration
manuals, the delicate and latent heat release rate of a wide range of living and deceased products
widely stored in cold storages is accessible. Using such tables, the necessary storage capacity can
be calculated
Thereby, the sensitive (Qs, r), latent (Ql, r) and complete cooling load (Qt, r) on the buildings
could be projected using this same calculation. Even though the load attributable to sunlit surface
areas varies depending on solar time, it is advantageous to measure the heating loads at distinct
solar times and select the maximum throughput to calculate the ability of the scheme. The Room

HVAC ASSIGNMENT 14
Sensitive Heat Factor (RSHF) for the house can be computed from the critical and complete
heating loads. When addressed in the previous section, it is possible to draw the RSHF line on
the psychrometric graph and repair the provide air condition from the RSHF value and the
necessary indoor situations.
4.5. Solar Heat loss through glass
Energy loss through a transparent window-like layer includes thermal transfer through
convection owing to size differences across the glass and thermal transfer through both windows
owing to sun sunlight. The thermal distribution by window is calculated using the previous
formula to ensure that CLTD is equitable for both the pressure variation in the window and A
straight similar to the complete ground region of the roof. The transaction of temperature through
window due to atmospheric radiation is given by:
Where Aunshaded appears to be the region exposed to sunlight, SHGFmax and SC are also the
optimum determinant of natural thermal benefit and element of foreshortening, and CLF is the
variable of thermal stress in both. As stated in a past chapter, the unlit region must be obtained
from the exterior layer and solar trigonometry aspects Depending on the orientation of the
window, location, month of year and type of crystal and internal shading device, SHGFmax and
SC are acquired from ASHRAE tables.
4.6. Heat Gain and Loss through Floors and Walls
4.7. Heat gain and loss through roof and ceiling
The critical system in conduction. The thermal energy rate is provided by opaque surfaces like
walls, roof, ground, door and window, etc.

HVAC ASSIGNMENT 15
From which U is the relative thermal energy coefficient as well as A on the side of the
conditioned air is the convection environment of the exterior. CLTD is the correlation throughout
the atmospheric pressure of the temperature load.
As addressed in the previous section, CLTD must also be received from either the CLTD sheets
for lush green particles. It is possible to modify the values received from either the board if the
current conditions differ from someone on whereby the CLTD tables are willing.
The CLTD importance is clearly equal to both the temperature difference across the door frame
or roof to surfaces that have not been moonlit sky or have negligible surface area (such as doors).
For instance, the value of CLTD is clearly comparable to both the differentiation amongst for
existing doors, Tout-Tin.
The CLTD of the interior walls is comparable to the difference in temperature between the non-
air-conditioned space neighboring to it and the heat-conditioned space for outdoors heat-
conditioned rooms surrounded by non-air-conditioned areas. Obviously, if a thermally-
conditioned room is populated to most of them by other air-conditioned rooms at the very same
heat, the upholstery house walls ' CLTD values will then be exceptionally low. This may be
difficult to measure floor and roof CLTD values with such a false ceiling. It is important to be
using the temperature of the earth to determine CLTD for floors on both the floor. In order to
have access, the temperature depends on the circumstances and fluctuates over time.
ASHRAE indicates appropriate temperature mismatch values for evaluating surface thermal
transfer. The CLTD ideals for the surface are the correlation in the dew point across the wall
(i.e., distinction between washroom or room below heat and also the programmed space) only if
the floor material stands on the cabinet or floor of another room. This dialogue is good for roofs

HVAC ASSIGNMENT 16
who do not have air-conditioned rooms in the front of them. also, for sunlit roofs with a very
ceiling tile, again the significance of the U can be received by presuming however that the
completely false ceiling may be an air space. In addition to going, the specific roof of the
building may not necessarily fit the CLTD values obtained illegally from either of the sheets.
Then you can practice the conclusion and select suitable CLTD values
5.0. Task 5- Air conditioning system
Air conditioning, now and then made reference to as air on alternating current (AC) is the
mechanism of modifying air (predominantly moisture and heat) characteristics to favorable
circumstances, usually with the aim of disseminating climate control to an area of space to
enhance solace. In the most particular context, air conditioning can refer to any type of
innovation in humidification, convection ventilation, drying, ventilation, disinfecting, air
conditioning or air movement that changes air conditioning. In particular, the air conditioning
unit is a machine that decreases the ambient temperature (most commonly a home device or
automotive system). The refrigeration has mostly been accomplished with a basic cooling cycle,
and sometimes with the heat loss. A total heating, insulation and refrigeration system is linked to
in building as "HVAC."
The challenging free storage method, which uses pumps to spread a coolant (generally or a
polyethylene blend) from either a cold source, can provide air conditioning, which in turn works
as a thermal exchanger for either the cooled room's electricity. Relatively cheap heating systems
may have very high energy efficiency and sometimes are combined to temporary thermal power
space (STES) in attempt to use bitter cold for bitter cold conditioning. Prevalent storage
materials are deep aquifers / a natural subterranean rock mass produced accessible through

HVAC ASSIGNMENT 17
reservoirs equipped with heat pressurizers with a bigger diameter cluster. Some big storage
structures are variant, using free air conditioning earlier than usual throughout the cooling
season. Then use a dehumidifier to refrigerate the flow from both the storage. During the heating
period, the storage temperature gradually rises, thus adding the heat pump to reduce
effectiveness.
Air conditioning and refrigeration machinery recognized as cooling loads must remove the
complete energy needed from the room to take it to the desired standard. The aim of the load
estimate is to determine the size of the facilities required for refrigeration and air conditioning to
preserve the interior architecture circumstances.
The layout load of the air conditioning unit is predicated on the layout conditions within and
without as well as the capability of the air conditioning and cooling machinery to generate and
preserve suitable circumstances within.
The two main elements of a thermal load inflicted on a hot weather designed to operate air
conditioning plant are:
1. Critical heat gain: an increase in sensitive heat is also said to take place where there is an
immediate complement of heat to both the confined space.
The sensitive heat gain can occur because the contrary reason:
-The temperature seeping into the house by undertaking across external walls, doors, windows,
ceilings are due to the temperature difference from both sides.
- Ultraviolet radiation heat obtained. It comprises of heat transmitted effectively via the window
glass and heat assimilated by walls and floors uncovered to solar energy and subsequently
transported to both the kitchen door.

HVAC ASSIGNMENT 18
- The energy was performed from spaces in same building through interior annexing that are not
conditioned.
-Heat produced by lights, aircraft engines, cook, etc., -Heat released by the residents.
-The thermal gain from the job of the fan.
2. Latent heat gain: a gain in latent heat has been shown to take place once water vapor is
introduced to the water of the enclosed area.
For the aforementioned reasons, the thermal energy gain could occur:
-The heat gains due to both the moisture throughout the internal air attempting to enter through
entryism.
- Heat yields from inhabitants attributable to condensation of humidity.
- Thermal gain attributable to humidity condensation of any process such as baking foods in the
condenser coil.
- Heat achieve due to moisture crossing through compartments or permeable ceilings directly
into the condenser coil
A 35 m x 20 m x 4 m elevated office shall be air-conditioned. The north heads the 30 m wall.
There have been two 2.5 m chambers on the east wall, only around 3 m instead of one. The
wrought iron gate seems to have four 2 m / 1.5 m glass walls instead of one. Then there are four
windows of the same size on the south and east sides. The energy intensity per m2 floor space is
15 W lasers Suppression is a transition in wind.
The south, east and west window solar water gain considerations (SHGF) are 150, 50 and 350 W
/ m2 simultaneously The aggregate thermal conduction characteristics are 2.5, 2, 3, 1.5 and 6 W /
m2 K for ceiling, ground, walls, entrance and vents. Addressed all directions of the roof and

HVAC ASSIGNMENT 19
with corresponding roof temperature. There have been a hundred individuals. The indoor
condition is humid bulb heat of 430C and physical humidity level of 0.0277 kg / kg. The dry
reservoir temperature interior state is 250C and the physical moisture coefficient is 0.01 kg / kg.
Using a compact fluorescent coefficient of 1.25. We will encounter the workplace vulnerable
thermal dispatch and environment latent energy load with 5% security factor, 5% engine
capacity, 1% power water heat leakage and 0.5% heat leakage
Design Data
Uwindows = 6 W / m2K, te for ground = 2.50 C, td2 = 250C, Factor for fan current = 5 %, SHGF for
south window = 50 W / m2, Door size = 2.5 m = 3 m, Qs per individual = 75W, No. of people =
100, QL per individual = 55W, Udoor = 1.5 W / m2 K, No. of air modifications (Ac) = 1, te for
north window = 120C, QSL = 15 W / m2 ground region, te for ceiling = 200C, W2 = 0.01 kg /
kg of ground water, Factor for storage water leakage = 1%. Te for the south wall = 150C, L = 35
m ; B = 20 m ; H = 4 m, SHGF for the west window = 350 W / m2, fluorescent light allocation
ratio = 1.25, security factor = 5 %, W1 = 0.0277 kg / kg of fresh water, td1 = 430C, te for the
east wall = 170C, U sides = 2.5 W / m2 K, te for the north wall = 120C, U ground = 3 W / m2 K,
SHGF for the south window = 150 W / m2, v1 = 0.3 m3/min per individual, Window length = 2
m.1.7, heat leakage factor = 0.5%
The office space scheme is illustrated in figure. The sensitive thermal gain from different sources
is shown in the chart below. Estimation of heat gain sensitive
Door area = 2.5 ×3 = 7.5 m2
Window area = 2 ×1.7 = 3.4 m2

HVAC ASSIGNMENT 20
Solar radiation achieved across southern glass = area of four glass windows * SHGF for southern
glass = (4 * 3) 150 = 1800W
Likewise, east glass solar heat gain = area of four glass windows * SHGF for east glass = (4 * 3)
50 = 600W
west glass solar heat gain = area of four glass windows * SHGF for west glass = (4 * 3) 350 =
4200W
total energy gain (critical) in south, east and west glass = 1800 + 600W + 4200 W = 6.6 kW
Total critical thermal gain from persons= QS per individual* No. of persons= 75* 100= 7500W=
7.5KW Total individual latent thermal gain= QL per individual* No. of persons= 55* 100=
5500W= 5.5KW Total latent thermal gain from persons= 50* 100= 5000W= 5.5KW.
We know that V1= (L*W*H*A)/60= (30* 20* 4* 1)/60= 40 m3/min
Infiltration water sensitive heat benefit,= 0.02044 v1 (td1–td2)= 0.02044* 40 (43–25)= 14.7KW.
Latent thermal increase due to air infiltration = 50 v1 (W1 – W2) = 50 * 40(0.0277 – 0.01) =
35.4KW
Air conditioning capacity and outdoor air v = 0.3 m3/min / person = 0.3 * 100 = 30 m3/min)
Round air critical temperature, OASH = 0.02044 v (td1 – td2) = 0.02044 * 30 (43 – 25) =
11.04KW Round air latent thermal, OALH = 50 v (W1 – W2) = 50 * 30 (0.0277 – 0.01) =
26.6KW.Sensitive light heat gain = light intensity wattage * Use factor * Exemption factor = 15
(30 * 20) * 1 * 1.25 = 11250 W = 11.25KW
Assuming that the unit is somehow positioned before the moisturizer (i.e. disregarding the 5
percent fan-power determinant), the overall room-sensitive temperature (RSH) must be increased

HVAC ASSIGNMENT 21
by 6.5 percent t (i.e. 5 percent security factor; 1 percent air-leakage supply and 0.5 percent heat
flow).
RSH= 1.065[ Heat increase from walls, ceilings, floors and doors + Solar heat lens boost +
Delicate heat gain due to ventilation (OASH) + Delicate thermal gain due to subversion
atmosphere+ Delicate thermal gain due to heating]= 1.065[ 44.788 + 6.6 + 7.5 + 14.7 + 11.04 +
11.25]= 102 kW Total space profound thermal seating (RLH) should also be improved by 6 %.
Entire space latent heat RLH = 1.06 [Individual latent heat gain + Latent thermal increase due to
infiltration water + Latent thermal gain due to friction (OALH)] = 1.06 [5.5 + 35.4 + 26.6] =
71.6kW If the device is subsequently placed to the conditioner, then 5% of the fan electricity
should be added to RSH.
Therefore, the RLH won't be affected. 107.00 KW= 6.6 + 44.788 + 14.7+ 7.5 + 11.04 + 11.25)
6.0. Task 6 -Sustainable HVAC system
The economy for insulation, heating and refrigeration (HVAC) feels the pain of becoming
electricity-efficient, just like most markets in the building industry. Sustainable growth has
become more than a trend in the industry; it's becoming a lifestyle today. But how is the industry
for HVAC modify to accommodate the above? How do the industry benefit from the new,
cleaner and more efficient technological advances?

HVAC ASSIGNMENT 22
6.1. Energy Efficient Active HVAC system
Figure 4:Exterior illustration of an efficient active HVAC system
In terms of power reliability, solar power is becoming big news, but if it doesn't, breached,
wouldn't repair it! Solar power is operating in two contexts. The reason we believe with panels
etc. and active solar energy when they think of solar energy. Solar thermal method uses walls,
windows, roofs, and floor houses to gather energy. Specific gain systems, for instance, use the
sunlight that runs through windows to translate it into heat energy that the walls and floors then
park as thermal energy. Unless the room temperature falls, the thermal energy radiates in to the
room, maintaining it heated. Throughout the walls of buildings, pipes could also be deposited.
Until the sun's buildings warmed up the liquid in the tubes will place the heat energy through the
sun that can then be pumped throughout most of the house.
6.2. Energy Efficient Passive HVAC system
In recent times, BAS is now more complex in facilities and has come to include more than just
HVAC restrictions. Contemporary BAS also includes tracking of electrical power, lighting
controls, condition-based tracking, identity management, and influence of the audio / human

HVAC ASSIGNMENT 23
visual. They permit technicians to maximize these systems to ensure to reducing the cost of
energy use as well as replenishment. However, BAS may also come with additional costs
connected to the development of safety schemes for information systems and the try to buy of
annual license agreements. Software updates are unavoidable throughout every BAS ' lifecycle.
Certain problems which may arise involve supporting to safeguard the infection if the scheme
will be on A system to guarantee that hackers cannot get in, particularly with Administrative
Influence and Data Acquisition (SCADA) structures which provide multi-site and deep-distance
influence.
6.3. Existing Building Potential
Occurrence created by Cisco; the real world of constructing mechanization has been named this
process. The floors are fitted with a wide range of scanners that can quickly identify levels of
motion, occupancy, temperature or even carbon dioxide. Another can influence the lighting,
safety and HVAC programs of a house. The devices can discover the everyday behaviors of the
residents of a building and change the water and light configurations immediately
Figure 5: Efficient HVAC system
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HVAC ASSIGNMENT 24
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