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Heat Exchanger Performance Articles & Analysis
14 articles found
Heat exchangers are commonly used for a wide range of purposes in the anaerobic and biogas sector, from digester heating and pasteurisation to evaporation, biogas dehumidification and exhaust gas heat recovery. With a wide range of types and designs available from numerous manufacturers, choosing the right solution, from the right supplier, can seem daunting. However, posing the right questions ...
Heat exchangers which employ heat recovery or regeneration should not be confused with ‘regenerative heat exchangers,’ which are a specific type of heat exchanger. What we mean by heat regeneration at HRS is the recovery of as much surplus ...
Operators of anaerobic digestion (AD) plants know how important it is to optimise energy use across all stages of the process. That is why many recapture as much heat as possible for reuse elsewhere, including from the hot exhaust gases generated by the combined heat and power (CHP) engines which turn the biogas from the AD plant into useful heat and electricity. Heat exchangers used for exhaust ...
In every situation where a heat exchanger is required, the combination of products and service fluids, application, temperature and other variables will be different. Understanding these properties ensures the correct heat exchanger is supplied. For example, high fouling materials may require a scraped-surface unit. Having adequate information will also ensure that the heat exchange process does ...
When operating in exceptionally challenging conditions, or handling difficult materials such as sewage and wastewater sludges, even the best designed heat exchangers will be susceptible to fouling. Understanding the different types of fouling and what causes them will help engineers and operators pick the best type of heat exchanger for their particular application and keep it running in optimum ...
Thermal conductivity is significantly affected by fouling, a thin insulating layer or film that accumulates on heat transfer surfaces. In fact, a fouling layer of just one thousandth of an inch (0.001") increases system power requirements by 10%. Fouling can be caused by biofilm or suspended solid particles that settle on heat exchangers. Side ...
Using new technology they have devised the optimal way to create energy from waste and make it useable for multiple applications ranging from disinfection, heating, washing or the generation of electricity. In partnership with Viking Craft Engines these two forward thinking and innovative companies have pushed the boundaries of incineration operations. ...
Exhaust heat from energy consuming processes and exhaust stacks is returned through a metal heat exchanger it as process air, preheated combustion air or plant comfort heat. The critical design factors for any energy recovery product is the airflow rate, temperature of the air stream, permissible pressure drop of the ...
The deposition of material on heat transfer surfaces is called fouling which significantly impacts on the thermal and mechanical performance of heat exchangers. ...
In the present work, experiments were conducted to study the effect of reducing Kusum oil's viscosity by increasing the fuel temperature using exhaust waste heat. A shell and tube heat exchanger was used with the test engine as a retrofit. The acquired data was analysed for engine performance parameters and exhaust emissions. ...
An extensive investigation of the effect of fouling on heat exchangers performance has been carried out based on the first and second laws of thermodynamics. ...
The 13,500 oxidizer uses a primary and secondary heat exchanger. The primary heat exchanger recovers energy from the combustion chamber exhaust and transfers it to the incoming process air stream to reduce fuel consumption. The secondary heat exchanger recovers additional energy from the primary ...
A novel passive space conditioning configuration is presented, integrating a Solar Collector System, Underground Storage Tank and Novel Heat Exchanger. This Underground Solar Thermal Heat Exchanger (USTHE) provided improved sensible heating/cooling of air by employing a Novel Heat ...
The performance of the heat exchanger was investigated. The focus was on the fouling of heat transfer surface by soot and the corresponding decrease of the heat transfer rate. ...