In the present work, an improved Entropy Generation Minimisation (EGM) approach aiming at minimising the revised entropy generation number which is the non-dimensionalised entropy by the ratio of heat flow to the input temperature of the cold fluid is developed for a plate-fin heat exchanger design with multiple design variables with the help of genetic algorithm. It is found that the approach can decrease the total fan power dramatically and improve the exchanger effectiveness simultaneously. Finally, this approach is applied to a heat recovery system where the heat exchanger works as a component of the system.
- Inderscience Publishers
- The Entropy Generation Minimisation based on the Revised Entropy ...
Thermal Screw Conveyors: Heated or Chilled
Industrial screw conveyors, also known as auger conveyors, are a widely-used method of bulk conveyance in many industries. These industries include food and chemical processing, water treatment plants, biofuel production, agriculture, and more. Besides conveyance, there are added benefits industrial screw conveyors can bring to its users. One of these benefits is the ability to heat or chill the product being conveyed. Our start into thermal screw conveyor manufacturing began nearly 10 years ago, when a cheese...
Investigating the interactions of decentralized and centralized wastewater heat recovery systems
In the urban water cycle there are different sources for extracting energy. In addition to potential and chemical energy in the wastewater, thermal energy can also be recovered. Heat can be recovered from the wastewater with heat exchangers that are located decentralized and/or centralized at several locations throughout the system. It can be recovered directly at the source (e.g. in the showers and bathrooms), at building block level (e.g. warm water tanks collecting all grey water), in sewers or at the wastewater...
Case study - Heat loss - A problem for wastewater treatment & nitrification
Problem: Operators know aerobic and anaerobic systems need sufficient water temperature to keep microbial populations active and working. Heat loss is detrimental to effluent quality and gas production. Both systems can be negatively affected from low daily and seasonal temperatures. Unfortunately, most operators and engineers have no control over water temperature loss in their tanks and basins.A northern Wisconsin cheese plant was dependent upon their anaerobic digester to reduce COD to a level they could...
Free eguide explains latest changes to heat network UK regulations
Community heating specialist Switch2 Energy Limited has published a guide to the latest legislative changes affecting the UK`s communal energy and district heating schemes and what they mean for heat suppliers. Important updates to the Heat Network (Metering and Billing) Regulations 2014 have been revealed by the new Department for Business, Energy and Industrial Strategy (BEIS). Simon Trevenna, UK Implementation Manager (Heat) at the new Department for Business, Energy and Industrial Strategy (BEIS), announced...
Improving and maintaining the performance of your Heat Exchanger or Condenser.
The usage of Heat Exchangers or Condensers is common in many processes across a wide range of industries. The Energy sector is no different, either in the Thermal Power Generation, Upstream and Downstream of the Oil and Gas including Petrochemical and Chemical plants; Heat Exchangers are used to cool of the steam or to pre-heat different liquid needed in the processes. The recurrent problem of micro-fouling and scaling in heat exchangers and condenser tubes reduces plant output, performance and service life, when...