Our benefits are decrease charges,dynamic income group,specialised QC,solid factories,top quality products and services for Big Discount China Industrial Cooling Unit Fin Tube Air Cooled Heat Exchanger, Our goal should be to create Win-win situation with our prospects. We imagine we will be your finest choice. “Reputation 1st, Customers Foremost. “Waiting for your inquiry.
By continuous innovation, we will present you with more valuable items and services, and also make a contribution for the development of the HVAC industry at home and abroad. Both domestic and foreign merchants are strongly welcomed to join us to grow together.
Liquid Circulation Heat Exchanger -Heat recovery core of AHU
Working Principle
Liquid circulation heat exchanger is liquid to air heat exchanger, heat exchangers usually installed in both fresh air (OA) side and exhaust air (EA) side, the pump between the two heat exchangers make the liquid circulate, then the heat in the liquid pre-heat or pre-cool the fresh air. Normally the liquid is water, but In winter, in order to decrease the freezing point, moderate ethylene glycol will be added into the water in reasonable percentage.
Features of Holtop Liquid Circulation Heat Exchanger
(1) Fresh air and exhaust air heat exchanged by separated liquid pipes, zero cross contamination. It suitable for heat recovery energy saving of air handling system of hospital, germfree lab and industries which discharge poisonous and harmful gas.
(2) Stable,reliable and long service life
(3) Flexible connection between fresh air and exhaust air exchangers, easy installation, which also is convenient for old AHU improvement.
(4) Heat exchangers are conventional, easy and low maintenance costs.
(5) Wide range of application, various connection methods like one to one, one to more, or many to many.
Specifications
(1) Liquid circulation heat exchangers is sensible heat exchangers, efficiency is between 55% to 60%.
(2) Suggested rows number in 6 or 8, face velocity not over 2.8 m/s
(3) The choice of circulating pump can refer to the fresh air and exhaust air pressure drop and the water flows pressure drop.
(4) Air flow direction has significant effect on the heat recovery efficiency, influence rate up to 20%.
(5) Freezing point of the hybrid ethylene glycol and water should be 4-6 ℃ lower than the local minimum outdoor temperature of winter, percentage of hybrid can be referred to the following table.
| Freezing point | -1.4 | - 1.3 | -5.4 | -7.8 | -10.7 | -14.1 | -17.9 | -22.3 |
| Weight percentage (%) | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 |
| Volume percentage (%) | 4.4 | 8.9 | 13.6 | 18.1 | 22.9 | 27.7 | 32.6 | 37.5 |
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Our benefits are decrease charges,dynamic income group,specialised QC,solid factories,top quality products and services for Big Discount China Industrial Cooling Unit Fin Tube Air Cooled Heat Exchanger, Our goal should be to create Win-win situation with our prospects. We imagine we will be your finest choice. “Reputation 1st, Customers Foremost. “Waiting for your inquiry.
By continuous innovation, we will present you with more valuable items and services, and also make a contribution for the development of the HVAC industry at home and abroad. Both domestic and foreign merchants are strongly welcomed to join us to grow together.
