Solar AC [Compatibility Mode]
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Transcript of Solar AC [Compatibility Mode]
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olar Air Conditionin S stem
By
Energetic Consulting Pvt. Ltd., Thane
Energy saved is profit earned.
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Process Adopted
Conduct energy audit at the site
Perform techno-economical analysis of the Energy Saving
Propose the feasible ESMs without compromising on output
ss s n es gnng an mpemen ng e s w a eg ene
level of customization
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Thermal Solar Cooling Techniques
Absorption Cooling:
Energy is transferred through phase-change processes
Adsorption Cooling:
Energy is transferred through phase-change processes
Desiccant Cooling:
Energy is transferred through latent heat processes
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Absorption Cooling
Absorbent Refrigerant
LiBr H2O
H2O NH3
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Adsorption cooling
Adsorption is the use of solids for removing substances from gases and
liquids The phenomenon is based on the preferential partitioning of substances
from the gaseous or liquid phase onto the surface of a solid substrate.
The process is reversible
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Adsorption Phase 1
Heating and pressurization
The adsorbent temperature increases, which
induces a pressure increase, from the
evaporation pressure up to the condensation
.
This period is equivalent to the
" " .
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Adsorption Phase 2
Heating and desorption + condensation
,
receiving heat while being connected to the
, .
The adsorbent temperature continues increasing,
which induces desor tion of va our. This desorbed
vapour is liquefied in the condenser.
The condensation heat is released to the second
heat sink at intermediate temperature.
This period is equivalent to the "condensation" in
compression cycles.
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Adsorption Phase 3
Cooling and depressurization
During this period, the adsorber releases heat
while bein closed.
The adsorbent temperature decreases, which
induces the pressure decrease from the
condensation pressure down to the evaporation
pressure.
This period is equivalent to the "expansion" in
compression cycles.
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Adsorption Phase 4
During this period, the adsorber continues
Cooling and adsorption + evaporation
releasing heat while being connected to the
evaporator, which now superimposes its pressure.
The adsorbent temperature continues decreasing,
which induces adsorption of vapor. This adsorbed
vapour is evaporated in the evaporator.
The evaporation heat is supplied by the heat
source at low temperature.
This period is equivalent to the "evaporation" in
compression cycles.
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Adsorption cooling - Examples
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Desiccant refrigeration
Addresses the issue of thermal comfort by modifying the water vapor
content in a space.
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Desiccant refrigeration principle
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Desiccant refrigeration flow-chart
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Frequently Asked Questions
Can the solar air conditioning system replace the existing system?
The solar air conditioning system is not designed to replace an
,
system from operating a large percentage of the time. The solar
overcast conditions.
Can solar air conditioning systems be used for residential applications?
Yes, from a technical standpoint.
What is the life expectancy of a solar powered A/C system?
The median life expectancy of the absorption systems is 23 years
according to ASHRAE. There are few moving parts to wear out
, .
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Frequently Asked Questions
What is the cost of a solar powered A/C system?
,
conditions and other factors. A Budgetary quote can be provided
after receiving data and a firm quotation may require a site survey.
Is this technology new?
It is not new; rather it is a combination of two very well established
technologies. Solar thermal collectors have a 30+ year success
story behind them, and the absorption chillers have been in use
or over years. uttng t em toget er wt t e rg t engneerngis the only thing that is new, coming about over the past 10 years
.
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Frequently Asked Questions
What type of maintenance is involved with a solar powered A/C unit?
Typically the maintenance is the same or less than with a regular
HVAC system. Any commercial system should have a bi-annual
- .
Does this technology qualify for tax credits/rebates?
Definitel this de ends on national olic .
Can the solar collectors for the solar A/C be used for any heating
applications?
Yes, when configured as a HVAC system the unit will provide heat in
the winter.
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Our Experience in SAC
We have design and carried out engineering of 160 Ton Solar Air
Conditioning System at Kalwa Hospital, Thane
We are the only team to have accomplished this feat on such scale
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Existing Energy Scenario
Energy Audit 2004 conducted by Energetic Consulting Pvt. Ltd., defines
the baseline of energy dynamics of the facility
Thermal energy is used to Electrical energy is used for
li htin , chilled water
hazardous waste
generation, for air handling
units, water pumping etc.
Lac per annum
Electrical energy bill is INR
75.51 Lac per annum
31% of total energy bill Electrical energy bill
constitutes 69% of total energy
bill
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Electrical Energy Scenario
Breakup of electrical energy utilization at CSMH
HVACsystem(includingpumps)
LightingHospitalbuilding
StreetLighting
Waterpump
t t es
Labandmiscellaneous
WindowAirconditioners
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Present Energy Scenario
Usage of air conditioning system
CSSD6%
Loss + BabyCare +
ComputerMain OT
25%
GynacOphthalmo.
7%10%
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Existing Energy Scenario
Air conditioning system installed capacity 2 nos. x 90 TR
Air conditioning system energy consumption 10 Lac kWh / annum
Cost of electrical energy for air conditioning Rs. 38 Lacs / annum
Cost of maintenance of AC system Rs. 13 Lac perannum
Total Cost of Energy for AC System Rs. 61 Lac / annum
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Energy Saving Measures (ESMs)
ESM-1: De-rating and tuning of boilers to reduce excess air level and to
reduce flue gas temperature
ESM-2: Fuel substitution for boiler system
Option A : Use of Agro based briquettes instead of fossil fuel (HSD)
Option B : Use of Natural Gas
Option C : Changeover to LDO from HSD
ESM-3: Replacement of water ring vacuum pump by new water ring
vacuum pump for reducing the batch cycle time
ESM-4: Use of condensate for hot water generation
ESM-5: Improvement in pumping system efficiency for potable water
and chilled water
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Energy Saving Measures (ESMs)
ESM-6: Improvement in the performance of the present chiller
ESM-7: Thermal storage system for the replacement of the existing chilling
ESM-8: Replacement of existing Tube lights with Energy Efficient Tube lights
ESM-9:Replace Aluminum fan-blades by FRP fan-blades for all Cooling
ESM-10: Solar Air Conditioning System
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ons era ons or ew ys em
Design
Replacement of existing electrical chillers considering their vintage
,
the system was about 15-16 years old and had become inefficient too
system
power failure or shut down. The new system should minimize electrical
Maintenance cost of the reciprocating machines was high and were
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Considerations for New System Design
Lack of ventilation at OPD section was creating suffocation and discomfort
and the new system should include additional load of (conditioned)
ventilation at OPD
Low side system needed total revamp and air ducting to critical areas
needed thorough cleaning from inside
Fresh air was not added to the system in order to reduce heat load
Fresh air is required to be added to the system as per ASHRAE standards
62.1 for indoor air quality management
Proposed system considered LDS system to minimize additional head load
after addition of fresh air
Hot water requirement for laundry consumption
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Technical Details of Proposed System
SAC system was designed for 6 hrs/day for 8 months and the
hours, including the 4 months of monsoon
160 TR Solar thermal Vapour Absorption System
.
Cooling tower with cooling water pumps
e wa er pumps
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Technical Details of Proposed System
Valves
-
Flow control Dampers
emovng o ppng an uc ng
Revamp of Fan Coil Units and AHUs
Duct, insulation, piping, filter and any and all connected parts to makethe system compliant with the norms
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Salient features of SAC System
Novel concept using solar thermal energy for air conditioning
contributing to national cause.
VAM Coefficient of performance (COP) is above 1.26
No compressor required, most effective step towards energy
conservation
Drastic reduction in expensive maintenance
No CFCs effective ste to rotectozone de letion eco-friendl desi n
Suitable for infection control
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13.6 m2 Scheffler Concentrators with
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Technical Summary of the Project
80 TR x 2 Nos. of Vapor Absorption Machines (VAMs) are operated on 8 bar
steam generated by 184 nos. of solar parabola, each of 13.6 m2 area to
The chilled water is circulated through AHUs and FCUs for providing air
conditioning. Some of he AHUs fromexisting facilit were repaired and few were
replaced to ensure proper conditions in the conditioned area. OPD section,
which did not have any ventilation or air conditioning, provided with conditionedventilation
LDS, technology developed by IIT Mumbai, was used for dehumidification of air
.
and 15 C dew pointand is cooled by chilled water generated out of SAC
All u to ether 2502.40 m2 o solar arabolic concentrato area is used t
provide 160 TR chilling and 52.5 TR conditionedventilation
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Technical Summary of the Project
2 nos. boilers with agro residue briquette as fuel are deployed as backup to the
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The last component of the system is the Low side modifications that were
necessar due to health and h iene standards.
The project is aimed at reduction in Green House Gas (GHG) emissions to 1200
CERs equivalent tons of Carbon dioxide
The CDM benefits of the project shall be availed and are included in the project
cost
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Estimated Energy Conservation
Present Energy Consumption :
Electrical consumption : Rs. 42.5 Lac / annum (Chiller comp)
Fuel Consumption : 61,000 Lit per year @ Rs. 38.73/ Liter
Maintenance Cost : Rs. 23.62 Lac / annum
Central A/C Plant : Rs. 13.6 Lac / year
Spare parts and O & M cost : Rs. 5 Lac per annum
The annual energy consumption of the chiller section was around 8,50,000
kWh/annum
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CDM benefits
development mechanism under Kyoto protocol for carbon emissions
.
per annum
124 Lac
is less than 5 years !!
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5 to 5.5
kWh/m2/day
Solar Insolation Map
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About Us
We believe in Energy saved is profit earned
We are a consortium of technocrats with Chemical, Mechanical and
Electrical engineering backgrounds
We are one of the 35 Energy service Companies (ESCOs) accredited
by Bureau of Energy Efficiency (BEE), Ministry of Power, Govt. of India
Our team Comprises of 6 Certified Energy Auditors by BEE
We have also been accredited by statutory agencies such as Petroleum
Conservation Research Association, Maharashtra Energy DevelopmentAgency, Gujarat Energy Development Agency and Kerala Energy
anagemen en re
Abo t Us
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About Us
We possess a collective experience of more than 135 man-years!
We have completed more than 200 assignments
contributed in completion of more than 20 projects
We are a reci ient of MEDAs Excellence in Ener Conservation
awards for the years 2004 , 2005 and 2006
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Accreditations and Awards
Team Energetic
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Team EnergeticNo. Team Member Qualifications Experience
1 Ra esh Desh ande B. Tech (Chem), Certified Ener Audito 17 Years
2 Shirish Deshpande B. E. (Chem), Certified Energy Auditor, LEED-AP 16 Years
3 Rakesh Desai B. E. (Chem), Certified Energy Auditor 15 Years
4 Ravi Bhalerao B. E. Mech Certified Ener Audito 25 Years
5 Vivek Bapat B. E. (Ele), Certified Energy Auditor 25 Years
6 Ravi Amdekar B. E. (Ele), Certified Energy Auditor 25 Years
.
8 Himanshu Manjrekar B.E. (Mech) 3 Years
9 Prashant Waghmare B. E. (Chem) 2 Years
. .
11 Nilesh Deshpande B. E. (Chem) 3 Years
12 Pritee Chandak M. Arch (Environmental) 1 Year
. .
14 Yogesh Nadgauda B. E. (Chem) GET
15 Siddheshwar Pise B. E. (Mech) GET
ages r a g ears
17 Parag Nerurkar D. Electronics Engg. 3 Years
18 Bhushan Agrnoor M. Com - Accountant 9 Years
O I t t b k
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Our Instruments bank
Ultra-sonic Flow-meters
Microprocessor based Power Analysers
Anemometer
Pitot Tube
Orsat Apparatus
U tube Manometer
Lux-meters
Temperature Measuring Instruments
Suction & Discharge Pressure Gauges
Tachometer
n ra e empera ure sensor
Ho to reach s
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How to reach us
nerget c onsu t ng vt tPlot No. A 88, Road No. 18,
age n ustra rea,
Thane (West) 400 604,
Fax: +91 22 2544 7011
Web: www.energy2profit.co.in
www.abinitio.co.in
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Warm Thanks !