A heat exchanger is a plate with copper tubes and algae covering that extracts heat from a natural geothermal hot spring. There are various types of heat exchangers for hot tubs. Here’s an overview of what these devices do and where they are used. The most popular types include Recuperator and Pasteurization. CIP (clean-in-place) heaters are also used in many industries.
Recuperators are counter-flow energy recovery heat exchangers placed in air handling systems’ supply and exhaust air streams. They are also used to recover waste heat from industrial processes. Recuperators can recover as much as 90% of the waste heat they pass through them. This means saving as much as 25% of the energy used for heating and cooling the exhaust gases for industrial processes. The energy recovered by recuperators is used for other purposes.
A heat exchanger is used to kill bacteria present in milk and other dairy products. The mild process of pasteurization kills bacteria, such as Tubercule bacillus, which is the most resistant to the heat-treatment process. Milk can be pasteurized to 63 degrees Celsius for ten minutes or more and does not affect its properties. This method is considered a standard index organism for pasteurization. By sterilizing milk, heat treatment can guarantee complete safety.
Raw milk cooling:
Researchers have studied the thermal properties of raw milk and the pasteurization process. On-farm heat exchangers can cool raw milk to 10 degC in as little as 4 hours. However, the effects of raw milk cooling on consumers’ perceptions are still unknown. A recent study aimed to determine the effects of the cooling process on raw milk sensory properties. It divided a raw milk batch into two parts. One portion was rapidly cooled with a plate heat exchanger to 6 degC in just one minute.
CIP (clean-in-place) heating:
The basic components of a CIP system are the same, no matter the size, from small-scale to large-scale systems. They include a freshwater supply, a pump to circulate the cleaning solution, and a heat exchanger. A heat exchanger is used to raise the temperature of the CIP solution to maximize cleaning efficiency while minimizing chemical concentration. A CIP system can be either stainless steel or polyethene.