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There are specific values for heat rise across a furnace heat exchanger given in all installation/operation manuals for all furnaces. As long as these limits are adhered to by the installer the heat exchanger will not overheat. I know this does not answer the question but there is no one blanket answer for all furnaces. Basically the more airflow through the furnace, the lower the HX temp and to determine when the airflow is correct a heat rise test is done and the airflow is set to the mid point of that specification.
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Application of plate heat exchanger?
The plate heat exchanger is used in multiple systems in the field of HVAC, including geothermal water heating systems, instantaneous domestic hot water systems, semi-instantaneous domestic hot water systems, swimming pool constant temperature maintenance systems, solar hot water systems, etc.Plate heat exchanger systems provide plate heat exchanger designs for each application:1. Geothermal water heating system: The heat exchanger acts as a separate device for the host of the heat pump and the open cold and heat source, which overcomes the corrosion of sensitive equipment such as the host by water quality.2. Domestic hot water system: The good heat transfer performance makes the plate heat exchanger gradually replace the traditional container heating system, with a smaller area and more economical investment.Instantaneous domestic hot water system-to ensure that users have hot water supply anytime, anywhere, compact system, no storage tank required, large boiler capacity required, large heat exchanger Semi-instantaneous domestic hot water system—requires smaller boiler capacity, smaller heat exchanger, easy to grow bacteria in the storage tank, and requires additional places for the storage tank.3. Swimming pool constant temperature maintenance system: Install a heat exchanger to make the pool water circulate independently. In order to avoid the corrosion of the plate by the chloride ion in the pool water, please choose the plate material carefully.4. Solar hot water system: As one of the clean energy sources, solar energy has attracted more and more attention. By using a heat exchanger, the loop for collecting solar energy and the loop for domestic hot water can be separated, thereby effectively protecting it. Cleanliness of the domestic hot water loop.If you want to know more, you can search：YOJO
Why you we use log mean temperature difference formula?
The use of the LMTD arises straightforwardly from the analysis of a heat exchanger with constant flow rate and fluid thermal properties. It is a simple method to approximated the temperature diving force in a heat exchanger. The LMTD is a logarithmic average of the temperature difference between the hot and cold streams at each end of the exchanger. The larger the LMTD, the more heat is transferred.
Hot Approach and Cold approach in heat exchanger?
Hot Approach: It is difference in temperature of hot fluid inlet temperature and cold fluid outlet temperature Cold Approach: It is difference in temperature of Hot fluid outlet temperature and cold fluid inlet temperature. Mohsin
Heat Exchanger Types and Uses?
heat sink classified according to the shape, the shape is how to dissipate within the selected heat sink that is the main intension here,, k type l type rectangular triangular chassis i know this much u can down load the pdfs for the types how to select the required heat sink 9844354439
How is oil sterilized in biotechnology?
In Biotech or micro, oil is sterilized by keeping it in hot air oven. It is not boiled and not heated on a burner. It is subjected to dry heat, kept for some hours on a certain temperature for a certain time period.
What transfers heat from the hot gas to the airstream to heat the structure?
A heat exchanger transfers heat from the hot gas to the airstream by allowing the two to come into close contact without mixing. The heat exchanger helps to efficiently transfer heat energy from one medium to another, heating up the airstream that is used to heat the structure.
Heat exchanger for ammonia absorption refrigeration system?
there are two type of heat exchanger in absorption refrigeration, first is liquid heat exchanger and other is gas heat exchanger.both heat exchanger function is same, to transfer heat (hot medium to cold medium) without violate second newton law of thermodynamics. liquids heat exchanger is between boiler and absorber vessel mean while gas heat exchanger between evaporator and absorber.
What is difference between condenser and heat exchanger?
A condenser is a specific type of heat exchanger that is used to transfer heat and convert a vapor or gas into its liquid form by removing heat. A heat exchanger, on the other hand, refers to a device that transfers heat between two fluids without them coming into direct contact. While a condenser serves the purpose of condensing a vapor into a liquid, a heat exchanger can be used for various purposes such as heating, cooling, or heat recovery.
What are the 4 basic elements of heat exchanger?
The four basic elements of a heat exchanger are the hot fluid inlet, hot fluid outlet, cold fluid inlet, and cold fluid outlet. The hot fluid carries heat into the exchanger, transfers it to the cold fluid, and then exits the system. The cold fluid absorbs heat from the hot fluid and exits the system at a higher temperature.
What does a heat exchanger fan do?
Dissipates the heat produced by the heat exchanger through convection and creates static and velocity pressure to distribute the hot air throughout the duct system.
What is the difference between a calorifer and a heat exchanger?
A calorifer is a type of radiator that heats a room by circulating hot water through its pipes. A heat exchanger is a device that transfers heat from one fluid to another without the fluids mixing, typically used in heating, cooling, or refrigeration systems. The key difference is that calorifers are specifically designed for room heating, while heat exchangers can be used for various heat transfer applications.
What can a heat exchanger provide for someone who lives in California?
California has very hot summers and reaches very high temperatures. A heat exchanger can function as air conditioner for someone living in california.
What does a core do?
A heater core in a vehicle takes some of the heat from the coolant and runs it through a heat exchanger. The blower in the car that blows hot air into your car runs through that heat exchanger which heats the air that enters your car.
What does core do?
A heater core in a vehicle takes some of the heat from the coolant and runs it through a heat exchanger. The blower in the car that blows hot air into your car runs through that heat exchanger which heats the air that enters your car.
What does core?
A heater core in a vehicle takes some of the heat from the coolant and runs it through a heat exchanger. The blower in the car that blows hot air into your car runs through that heat exchanger which heats the air that enters your car.
What does a heater core do?
A heater core in a vehicle takes some of the heat from the coolant and runs it through a heat exchanger. The blower in the car that blows hot air into your car runs through that heat exchanger which heats the air that enters your car.
What is one to one pass heat exchanger?
A one-to-one pass heat exchanger is a type of heat exchanger where both the hot and cold fluids pass through the exchanger once. This design is simpler and more compact compared to multiple pass exchangers, but may have a lower heat transfer efficiency due to the limited contact time between the fluids. It is commonly used in applications where space and cost are important factors.
