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Email: Info@ImprovedEnergy.com
Copyright © 2005-2006 PermaFrost H/A, LP All rights reserved
Copyright © 2006 Improved Energy Solutions LLC, All Rights Reserved.
Copyright © 2005-2006 PermaFrost H/A, LP All rights reserved
Copyright © 2006 Improved Energy Solutions LLC, All Rights Reserved.
PermaFrost Freezer Room Test - April 2005
An Evaluation of the effects of PermaFrost treatment on A Freezer Room
Refrigeration System for TOPS Supermarket, Pinklao, Thailand
NOTE: Tables and appendices referred to in this summary are available in this PDF file.
INTRODUCTION
of the trail was to prove to the engineering management the benefits derived from using PermaFrost in their refrigeration systems. The
PermaFrost and nominated the low temperature freezer room at their Pin Kloau branch.
PermaFrost and nominated the low temperature freezer room at their Pin Kloau branch.
and nominated the low temperature freezer room at their Pin Kloau branch.
branch.
Pre-injection COP testing was carried out on the system on the 17 th February 2005, after the injection, a run hour meter was attached
to the system to record the actual compressor running time. This run hour meter was left recording for a period of 12 days and
removed on the 25 th February.
Following the removal of the run hour meter the system was injected with PermaFrost on the 25 th February.
The run hour meter was again connected on the 9 th March and removed on the 23rd of March.
Post COP testing was carried out on the system on the 8 th of April. The following report is a summation of the COP testing and
subsequent results and recommendations for further system improvement.
The testing was carried out over the same time period on each occasion (1230hrs until 1700hrs). The ambient temperature was 4.6deg
higher for the second test.
TESTING METHODOLOGY
The Sanyo refrigeration room operates at sub-zero temperatures. The room is maintained at -18 degree C. The system uses R-22 as
the refrigerant type.
The testing procedure included an analysis of the refrigeration system on two occasions:
To measure the performance of the refrigeration system, the ETM refrigeration system analyzer was used to data log the operating
conditions of the system during normal operation. The analyzer collected the data on the pre& post tests. Operation conditions were 4
hour duration, logging at one minute intervals.
The following conditions were monitored:
To measure the freezer room temperature before and after inject PermaFrost into the system, the temperature recorder was used to log
the temperature data as over 45 hour at two min interval.
CO-EFFICIENCY TESTING SUMMATION
Pre-treatment Post-treatment % change
Evaporator Temperature -33.76 -37.03 -10%
Condensing Temperature 34.8 36.39 4%
Discharge Temperature 96.93 97.50 1%
Superheat 39.82 42.98 8%
Co-Efficiency of Performance 3.12 4.5 36%
Power in Kw’s 50.57 48.2 -6%
Evaporator Pressure 0.39 0.20 -48%
Condensing Pressure 12.47 13.02 5%
Liquid Temperature 35.09 37.22 7%
CONCLUSIONS
It is evident from the data collected by the Refrigeration Performance Analyzer (ETM) on the Pre and Post injection recording times
that a considerable improvement in operating efficiency has been achieved.
Prior to injection the unit could not achieve a suitable coil temperature to maintain a constant room temperature and allow the unit to off
cycle. The injection of PermaFrost has improved the system efficiency and allowed the unit to operate at a lower evaporator
temperature, reduce the product holding temperature and have off cycle periods. The unit is still not operating to its full capacity. The
high superheat temperature and our own observations indicate that the system is now operating with a low refrigerant level. This is
preventing the evaporator from achieving its optimum operating temperature and allowing the unit longer off cycle periods.
The system has achieved an over-all efficiency gain of approx 37%. The PermaFrost within the system requires no further service
for the life of the system, with the exception of an addition of 0.5% added to the oil at the time of a system oil change. A good
maintenance program must now be implemented to ensure that the system continues to operate at its maximum ability.
NOTE: The above is the executive summary of a 21-page report available at Freezer Room Refrigeration Test: April 2005.
Tables and appendices referred to in this summary are available in this PDF file
An Evaluation of the effects of PermaFrost treatment on A Freezer Room
Refrigeration System for TOPS Supermarket, Pinklao, Thailand
NOTE: Tables and appendices referred to in this summary are available in this PDF file.
INTRODUCTION
of the trail was to prove to the engineering management the benefits derived from using PermaFrost in their refrigeration systems. The
PermaFrost and nominated the low temperature freezer room at their Pin Kloau branch.
PermaFrost and nominated the low temperature freezer room at their Pin Kloau branch.
and nominated the low temperature freezer room at their Pin Kloau branch.
branch.
Pre-injection COP testing was carried out on the system on the 17 th February 2005, after the injection, a run hour meter was attached
to the system to record the actual compressor running time. This run hour meter was left recording for a period of 12 days and
removed on the 25 th February.
Following the removal of the run hour meter the system was injected with PermaFrost on the 25 th February.
The run hour meter was again connected on the 9 th March and removed on the 23rd of March.
Post COP testing was carried out on the system on the 8 th of April. The following report is a summation of the COP testing and
subsequent results and recommendations for further system improvement.
The testing was carried out over the same time period on each occasion (1230hrs until 1700hrs). The ambient temperature was 4.6deg
higher for the second test.
TESTING METHODOLOGY
The Sanyo refrigeration room operates at sub-zero temperatures. The room is maintained at -18 degree C. The system uses R-22 as
the refrigerant type.
The testing procedure included an analysis of the refrigeration system on two occasions:
To measure the performance of the refrigeration system, the ETM refrigeration system analyzer was used to data log the operating
conditions of the system during normal operation. The analyzer collected the data on the pre& post tests. Operation conditions were 4
hour duration, logging at one minute intervals.
The following conditions were monitored:
- Power Input
- Cooling capacity
- Coefficient of Performance (COP)
- Suction Superheat
- Liquid sub cooling
- Compressor Suction and Discharge Pressures
- Compressor discharge & suction temperature
- To install Run-Hour meter on the compressor to monitor the on\off cycle periods of the compressor for comparable percentage
of running time between before and after injection of PermaFrost into the system.
To measure the freezer room temperature before and after inject PermaFrost into the system, the temperature recorder was used to log
the temperature data as over 45 hour at two min interval.
CO-EFFICIENCY TESTING SUMMATION
Pre-treatment Post-treatment % change
Evaporator Temperature -33.76 -37.03 -10%
Condensing Temperature 34.8 36.39 4%
Discharge Temperature 96.93 97.50 1%
Superheat 39.82 42.98 8%
Co-Efficiency of Performance 3.12 4.5 36%
Power in Kw’s 50.57 48.2 -6%
Evaporator Pressure 0.39 0.20 -48%
Condensing Pressure 12.47 13.02 5%
Liquid Temperature 35.09 37.22 7%
CONCLUSIONS
It is evident from the data collected by the Refrigeration Performance Analyzer (ETM) on the Pre and Post injection recording times
that a considerable improvement in operating efficiency has been achieved.
Prior to injection the unit could not achieve a suitable coil temperature to maintain a constant room temperature and allow the unit to off
cycle. The injection of PermaFrost has improved the system efficiency and allowed the unit to operate at a lower evaporator
temperature, reduce the product holding temperature and have off cycle periods. The unit is still not operating to its full capacity. The
high superheat temperature and our own observations indicate that the system is now operating with a low refrigerant level. This is
preventing the evaporator from achieving its optimum operating temperature and allowing the unit longer off cycle periods.
The system has achieved an over-all efficiency gain of approx 37%. The PermaFrost within the system requires no further service
for the life of the system, with the exception of an addition of 0.5% added to the oil at the time of a system oil change. A good
maintenance program must now be implemented to ensure that the system continues to operate at its maximum ability.
NOTE: The above is the executive summary of a 21-page report available at Freezer Room Refrigeration Test: April 2005.
Tables and appendices referred to in this summary are available in this PDF file
