Types of heat exchangers such as water heaters / coolers, steam heaters, freon coolers and electric heaters are used in ACM air handling units. Heat exchangers consist of copper tubes with aluminum fins - standard (also possible other versions).
The number of rows 2 ... 5 is standard (higher rows are also possible). The collectors are made of copper, which prevents electrocorrosion (equipped with fittings for drainage and purging).
Water and freon coolers are equipped with a drainage tray and a drip trap. Optionally complete with hydraulic siphon.
Operating parameters for heat exchangers:
For water: maximum pressure 1.4 MPa, maximum temperature 130 ° C
For freon: maximum pressure 4.2 MPa, recommended evaporation temperature +3 ... + 8 ° С
For steam: maximum temperature 180 ° C
Electric heaters:
The electric heater is a group of resistance heating elements (PHE). (heat-resistant alloy Cr-Ni-Fe). All heaters are mounted on a galvanized steel frame, equipped with a terminal block, disconnected on the step and have two overheating thermostats (60 ° C and 90 ° C).
