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PermaFrost Case Study: Chiller Test - March 2005
Evaluation of the Effect of the Effects of on a York Centrifugal Water Chiller YTDL-E2-JCL
Multiplex Property Trust at Gold Field's House- Sydney, NSW
Prepared by Andrew Pang - March 2005
NOTE: The following is the executive summary of a 20-page report avail-able at Gold Field's Chiller
Test: March 2005. Tables and appendices referred to in this summary are available in this PDF file
INTRODUCTION
The aim of this report is to examine the effects of a product known as PermaFrost upon the refrigeration
system of the water-cooled, centrifugal York YTDL-E2-JCL water chiller at Goldfields House, Sydney.
PermaFrost has previously been claimed to enhance the performance of refrigeration and air conditioning
systems elsewhere. Literature from the Polar Oil Company (which markets the product) states that
PermaFrost – a molecular technology that relies on highly activated thermal conductive compounds -
will improve heat transfer on metal surfaces and increase lubricity of the refrigerant oil.
move more heat for the same amount of compressor action. Energy demand and consumption can be reduced."
move more heat for the same amount of compressor action. Energy demand and consumption can be reduced."
METHODOLOGY
power input.
power input.
The testing procedure included an analysis of the refrigeration system on two occasions:
To measure the performance of the refrigeration system, a data logger was used to datalog the operating
conditions of the system during testing. For each test, the analyser collected the data on the following operating
conditions over a 4 to 5 hour period at one minute interval:
power input.
power input.
TESTING
The refrigeration system of the chiller was first tested on January 17, 2005 before the product, PermaFrost was
introduced into the system and then on March 8, 2005 after the treatment. On both occasions the compressor
was running at full capacity.
On the final test, the average condenser cooling water inlet temperature was 26.68°C. Hence, there was little
difference in the condition of the condenser cooling water inlet temperature during both tests.
RESULTS OF TESTING
Detailed results of the operating conditions are provided in the following charts, all found in Appendix A:
Pre-treatment Test (January 17, 2005)
Post-treatment Test (March 8, 2005)
OBSERVATIONS
A comparison of the mean operating conditions for each of the tests are summarised in table below:
Test Results : Operating Mean Values
Pre-treatment Post-treatment % change
Cooling Capacity (kW) 959.11 1107.64 15.49
Power Input (kW) 184.85 169.57 -8.27
Coefficient of Performance, COP 5.20 6.53 25.58
Condensing Temperature (°C) 32.87 36.97 12.47
Evaporating Temperature (°C) 4.60 4.14 -10.00
Chilled Water Inlet Temperature (°C) 12.70 13.53 6.29
Chilled Water Outlet Temperature (°C) 8.40 8.53 1.55
Chilled Water Temperature Difference (K) 4.32 4.99 15.51
Condenser Water Inlet Temperature (°C) 26.65 26.68 0.11
Condensing Pressure (Bar) 0.20 0.37 85
Evaporating Pressure (Bar) - 0.60 - 0.60 0
A number of observations can be made about the effects of PermaFrost on the chiller:
CONCLUSION
The tests carried out on the chiller have clearly demonstrated that treatment with PermaFrost has enhanced its
performance by a significant 26 %. This is due to the molecular technology of PermaFrost in depositing its
highly activated thermal conductive compounds on the heat transfer surfaces of the evaporator and condenser.
The improvement in the heat transfer in both the evaporator and condenser has resulted in a marked increase
of 15 % in the cooling capacity and a decrease of 8 % in the compressor power input.
The decrease in power input and increase in system performance will result in the compressor using less
energy to achieve the same cooling effect on the chilled water as prior to treatment with Permafrost. The
decrease in energy usage by the compressor will correspond approximately to the increase in the system
performance. This is achieved by a reduction of the compressor run time to produce the same cooling effect on
the chiller.
NOTE: The above is the executive summary of a 20-page report available at Gold Field's Chiller Test: March
2005. Tables and appendices referred to in this summary are available in this PDF file.
Evaluation of the Effect of the Effects of on a York Centrifugal Water Chiller YTDL-E2-JCL
Multiplex Property Trust at Gold Field's House- Sydney, NSW
Prepared by Andrew Pang - March 2005
NOTE: The following is the executive summary of a 20-page report avail-able at Gold Field's Chiller
Test: March 2005. Tables and appendices referred to in this summary are available in this PDF file
INTRODUCTION
The aim of this report is to examine the effects of a product known as PermaFrost upon the refrigeration
system of the water-cooled, centrifugal York YTDL-E2-JCL water chiller at Goldfields House, Sydney.
PermaFrost has previously been claimed to enhance the performance of refrigeration and air conditioning
systems elsewhere. Literature from the Polar Oil Company (which markets the product) states that
PermaFrost – a molecular technology that relies on highly activated thermal conductive compounds -
will improve heat transfer on metal surfaces and increase lubricity of the refrigerant oil.
move more heat for the same amount of compressor action. Energy demand and consumption can be reduced."
move more heat for the same amount of compressor action. Energy demand and consumption can be reduced."
METHODOLOGY
power input.
power input.
The testing procedure included an analysis of the refrigeration system on two occasions:
- Before the addition of PermaFrost,
- After the addition of the PermaFrost.
To measure the performance of the refrigeration system, a data logger was used to datalog the operating
conditions of the system during testing. For each test, the analyser collected the data on the following operating
conditions over a 4 to 5 hour period at one minute interval:
- Power input
- Chilled water inlet & outlet temperatures
- Condenser cooling water inlet temperature
- Evaporating & condensing temperatures
- Evaporating & condensing pressures
power input.
power input.
TESTING
The refrigeration system of the chiller was first tested on January 17, 2005 before the product, PermaFrost was
introduced into the system and then on March 8, 2005 after the treatment. On both occasions the compressor
was running at full capacity.
On the final test, the average condenser cooling water inlet temperature was 26.68°C. Hence, there was little
difference in the condition of the condenser cooling water inlet temperature during both tests.
RESULTS OF TESTING
Detailed results of the operating conditions are provided in the following charts, all found in Appendix A:
Pre-treatment Test (January 17, 2005)
- Cooling Capacity, Power Input & Coefficient of Performance
- Evaporator & Condenser Pressures
- Evaporating Temperature and Chilled Water Inlet & Outlet Temperatures
- Condenser Water Inlet and Condensing Temperatures
Post-treatment Test (March 8, 2005)
- Cooling Capacity, Power Input & Coefficient of Performance
- Evaporator & Condenser Pressures
- Evaporating Temperature and Chilled Water Inlet & Outlet Temperatures
- Condenser Water Inlet and Condensing Temperatures
OBSERVATIONS
A comparison of the mean operating conditions for each of the tests are summarised in table below:
Test Results : Operating Mean Values
Pre-treatment Post-treatment % change
Cooling Capacity (kW) 959.11 1107.64 15.49
Power Input (kW) 184.85 169.57 -8.27
Coefficient of Performance, COP 5.20 6.53 25.58
Condensing Temperature (°C) 32.87 36.97 12.47
Evaporating Temperature (°C) 4.60 4.14 -10.00
Chilled Water Inlet Temperature (°C) 12.70 13.53 6.29
Chilled Water Outlet Temperature (°C) 8.40 8.53 1.55
Chilled Water Temperature Difference (K) 4.32 4.99 15.51
Condenser Water Inlet Temperature (°C) 26.65 26.68 0.11
Condensing Pressure (Bar) 0.20 0.37 85
Evaporating Pressure (Bar) - 0.60 - 0.60 0
A number of observations can be made about the effects of PermaFrost on the chiller:
- Cooling capacity increased by 15.49 % in the post-treatment test. This indicates a significant
improvement in heat transfer in the evaporator. - Power input decreased by 8.27 % in the post-treatment test. This indicates a reduction in power
consumption. - The COP increased by 25.58 % in the post-treatment test. This indicates a significant improvement in the
overall system performance. - There was an increase in the chilled water temperature difference of 15.51 %. This again indicates a
significant improvement in heat transfer in the evaporator. - There was an increase in the condensing temperature and pressure of 12.47 % and 85% respectively in
spite of a very slight increase of 0.11% in the condenser water inlet temperature. - The evaporating temperature decreased by 10% but the evaporating pressure remained unchanged.
CONCLUSION
The tests carried out on the chiller have clearly demonstrated that treatment with PermaFrost has enhanced its
performance by a significant 26 %. This is due to the molecular technology of PermaFrost in depositing its
highly activated thermal conductive compounds on the heat transfer surfaces of the evaporator and condenser.
The improvement in the heat transfer in both the evaporator and condenser has resulted in a marked increase
of 15 % in the cooling capacity and a decrease of 8 % in the compressor power input.
The decrease in power input and increase in system performance will result in the compressor using less
energy to achieve the same cooling effect on the chilled water as prior to treatment with Permafrost. The
decrease in energy usage by the compressor will correspond approximately to the increase in the system
performance. This is achieved by a reduction of the compressor run time to produce the same cooling effect on
the chiller.
NOTE: The above is the executive summary of a 20-page report available at Gold Field's Chiller Test: March
2005. Tables and appendices referred to in this summary are available in this PDF file.
Copyright © 2005-2006 PermaFrost H/A, LP All rights reserved
Copyright © 2006 Improved Energy Solutions LLC, All Rights Reserved.
