Application of Plate Heat Exchanger in HVAC

Application of Plate Heat Exchanger in HVAC

21 Feb 2019

Heat exchanger hvac systems:
Regional heating system

Co-generation systems

Hot-water heating system

Instant domestic hot water system

Characteristics of instant heat type
It can ensure that users have hot water supply at any time and anywhere. The system is compact, without storage tanks, and needs larger boiler capacity and larger plate heat exchanger.

Semi-instant domestic hot water system

Semi-instantaneous characteristics
It needs smaller boiler capacity, smaller plate heat exchanger, bacteria easily grow in storage tank, and extra storage tank.
Constant temperature maintenance system in swimming pool

Solar water heating system

Cooling air conditioning system

Application of condenser:
1. Cooling tower water cooling condensate
2. Seawater, river or well water cooling condensate
3. ethylene glycol cooling condensate
4. Short circuit refrigeration unit system
5. Groundwater cold/heat source system
6. Heat recovery system
The heat exchanger on the condensate side can play the following roles:
Protect condenser from pollution, scaling and corrosion
Substituting condenser to bear side pressure of cooling water
It can not operate refrigeration units when the season permits.
It can achieve heat recovery.
It can save expensive additives.

Cooling tower water cooling condensate

Seawater, river or well water cooling condensate

Ethylene glycol cooling condensate

Short circuit refrigeration unit system

Groundwater cold/heat source system

Heat recovery system

Application of evaporation side:
1. Pressure relay system
2. Separation cooling circulating water (no pressure relay function)
3. Ice storage system
4. Area cooling system
5. Ceiling cooling system
The plate heat exchanger on the evaporator side can play the following roles:
Avoid high pressure (pressure relay system) on refrigeration unit
Reduce the use of expensive and inefficient additives
Separate cooling water system to ensure high cleanliness of local system (electronic component production)
Reduce the damage caused by leakage
Pressure relay system

Separation cooling circulating water

Ice storage system

Basic elements of ice storage system design:
Setting air conditioning requirements
Operation plan
Total ice storage system
Partial ice storage system
Refrigeration unit is the main system
Ice storage system
Regional cooling system

Ceiling cooling system

Other application schemes of air conditioning system
1. Conversion of cooling and heating in summer and winter

2. Refrigerated water pre-cooling system

Advantages of plate heat exchanger in cooling and air conditioning system
1. High heat transfer coefficient, logarithmic temperature difference can be made to 0.5 degrees.
2. Small size, light weight, easy to install, can be placed in the equipment layer.
3. Easy to disassemble, easy to clean up the internal dirt.
4. Strong structure, can withstand high working pressure, up to 3.0 MPa.
5. Heat transfer efficiency is high and operation cost is reduced.
6. Low fixed investment.