1. Temperature of heat exchanger
2. In the evaporator superheat is usually 5-10 ℃ (degree of superheat is not the same as suction temperature, will vary considerably in fission machine or device at low temperature), the supercooling degree in the condenser is usually 5-8 ℃.
3. Evaporator head-on wind speed is generally 1.5-3 m/s, condenser is for 2-3 m/s, the narrowest surface wind speed is not more than 6 m/s. Most head on wind speed with 2.5 m/s.
4. tube diameter and thickness
5. Line spacing multiply by array pitch, generally use the form of equilateral triangle cross compound. Such as 25.4x22mm , 25x21.65mm etc
6. Fin:average thickness is 0.095 0.3 mm, spacing is 1.1-2.5 mm,
7. Line structure: evaporator generally for two to six rows, condenser for 1-6 rows.
8. Flow design
Editor’s Note: This is a guest post from Technical alliance of refrigeration and air conditioning heat exchanger