Solar AC [Compatibility Mode]

7/28/2019 Solar AC [Compatibility Mode]

1/41

olar Air Conditionin S stem

By

Energetic Consulting Pvt. Ltd., Thane

Energy saved is profit earned.


2/41

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


3/41

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


4/41

Absorption Cooling

Absorbent Refrigerant

LiBr H2O

H2O NH3


5/41

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


6/41

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

" " .


7/41

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.


8/41

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.


9/41

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.


10/41

Adsorption cooling - Examples


11/41

Desiccant refrigeration

Addresses the issue of thermal comfort by modifying the water vapor

content in a space.


12/41

Desiccant refrigeration principle


13/41

Desiccant refrigeration flow-chart


14/41

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

, .


15/41


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

.


16/41


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.


17/41

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


18/41

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


19/41

Electrical Energy Scenario

Breakup of electrical energy utilization at CSMH

HVACsystem(includingpumps)

LightingHospitalbuilding

StreetLighting

Waterpump

t t es

Labandmiscellaneous

WindowAirconditioners


20/41

Present Energy Scenario

Usage of air conditioning system

CSSD6%

Loss + BabyCare +

ComputerMain OT

25%

GynacOphthalmo.

7%10%


21/41

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


22/41

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


23/41

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


24/41

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


25/41

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


26/41

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


27/41

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


28/41

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


29/41

13.6 m2 Scheffler Concentrators with


30/41

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


31/41

Technical Summary of the Project

2 nos. boilers with agro residue briquette as fuel are deployed as backup to the

-

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


32/41

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


33/41

CDM benefits

development mechanism under Kyoto protocol for carbon emissions

.

per annum

124 Lac

is less than 5 years !!


34/41

5 to 5.5

kWh/m2/day

Solar Insolation Map


35/41

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


36/41

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


37/41

Accreditations and Awards

Team Energetic


38/41

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


39/41

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


40/41

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


41/41

Warm Thanks !

Solar AC [Compatibility Mode]

Documents