POWER CONTROL LIMITED Introducing “PermaFrost” Presented by Ir. K.M. Wong

POWER CONTROL LIMITED What is “PermaFrost” A super thermal-conductive additive used to improve the efficiency of chillers and refrigeration equipment Developed and manufactured in U.S.A. (4 patents between 1990s and 2002)

POWER CONTROL LIMITED How it works (1) Lubricating oil contaminated the evaporator & condenser!

POWER CONTROL LIMITED Before PermaFrost Reduced heat transfer Excessive Laminar friction Stagnant Oil Tubing Wall Energy loss Stagnant Oil This barrier reduces the heat transfer inside the refrigerant circuit and increases the energy consumption (kWh).

POWER CONTROL LIMITED After PermaFrost (1) Accelerated Heat Transfer Reduced laminar friction Stagnant oil dispersal PermaFrost Thermo- conductive molecules Refrigerant contacts metal PermaFrost molecules are attracted to the inner metal tubing. The thermo-conductivity rate is ACCELERATED and laminar friction is virtually eliminated.

POWER CONTROL LIMITED After PermaFrost (2) Efficient turbulent flow Stagnant Oil cleared Accelerated Thermo Conductivity. Faster Heat Dispersal PermaFrost Thermo- conductive molecules Refrigerant Oil barrier is completely and permanently removed

POWER CONTROL LIMITED After Applying PermaFrost The insulative oil barrier is completely and permanently removed. The inner metal surface is bound by thermo- conductive PermaFrost molecules. Heat transfer between the refrigerant and chilled water / air will speed up. The compressor will run a shorter time in producing the same cooling capacity.

POWER CONTROL LIMITED Advantages of “PermaFrost” Saves over 10% in electricity consumed by chillersSaves over 10% in electricity consumed by chillers Reduce Energy !! Save Money !! Increase Profits !!

POWER CONTROL LIMITED Advantages of “PermaFrost” Easy to installEasy to install –just manually pump into the existing lub oil Zero down timeZero down time No mechanical modificationNo mechanical modification Extends equipment (compressors) lifeExtends equipment (compressors) life

POWER CONTROL LIMITED Suitable Application Screw Compressor Centrifugal Compressor Reciprocating Compressor Scroll Compressor PermaFrost may be used in most air-conditioning and refrigeration systems with the exception of absorption chillers. Systems where PermaFrost can be used are as follows: And many other refrigeration systems…

POWER CONTROL LIMITED Compatibility Seal Compatibility: Neoprene, Nitrite, Viton, PFE, Buna, Nylon, Mylar, Polypropylene and all prevalent types of seals used in the HVAC industry.Seal Compatibility: Neoprene, Nitrite, Viton, PFE, Buna, Nylon, Mylar, Polypropylene and all prevalent types of seals used in the HVAC industry. Metal Compatibility: Steel, Copper, Aluminum, Brass, Cast Iron, Stainless Steel, Silver, Copper Alloys and Zinc.Metal Compatibility: Steel, Copper, Aluminum, Brass, Cast Iron, Stainless Steel, Silver, Copper Alloys and Zinc. Refrigerant Compatibility: Group 1, 2, 3 Ammonia, Propane and all prevalent refrigerants.Refrigerant Compatibility: Group 1, 2, 3 Ammonia, Propane and all prevalent refrigerants. Oil Compatibility: Mineral, Synthetic, POE, Alpha Olefins and special blends.Oil Compatibility: Mineral, Synthetic, POE, Alpha Olefins and special blends.

POWER CONTROL LIMITED Our Reference Clients

POWER CONTROL LIMITED Performance Evaluation The efficiency of a chiller is defined by the coefficient of performance (COP)

POWER CONTROL LIMITED Refrigeration Cycle

POWER CONTROL LIMITED P – H Diagram Cooling Capacity = COP X Power Input ( V X I )

POWER CONTROL LIMITED Tapping to take Suction Temperature and Pressure Readings

POWER CONTROL LIMITED Collected Data Sent to an Analyzer

POWER CONTROL LIMITED Data sent from the Analyzer to the Recorder

POWER CONTROL LIMITED Data recorded in every minute

POWER CONTROL LIMITED Example Savings Due to PermaFrost for a 100 Ton Chiller Cooling Capacity = 100 Ton = 352 KW (a) COP = 2.8 (b) Power Input = (a) / (b) = 126KW at full load Diversity = 0.7 Hours of Operation Per Day = 16 hours Yearly Electricity Consumption = 126 KW X 16 hours X 0.7 X 365 days X $1.26 / KWH = ~ HK$650,000 For a savings of 10% after treatment of “PermaFrost”For a savings of 10% after treatment of “PermaFrost” Total Amount of Savings ~ HK$65,000 per year

POWER CONTROL LIMITED END THANK YOU Ir. K.M. Wong Power Control Limited Address: 28/F., Soundwill Plaza, 38 Russell Street, Causeway Bay, Hong Kong Tel: Mobile: