in this paper, a new systematic design methodology has been developed for thes imultaneous energy and water minimization in multiple-contaminant systems that also feature maximum re-use of water. in addition to allowing re-use of water in multiple-contaminant systems, issues about heat losses and flowrate changes inside unit operations have also been incorporated in this new design method. to i...

In a cylindrical scraped heat exchanger crystallizer geometry the flow field influence on the local heat transfer distribution on an evenly cooled scraped heat exchanger surface has been studied by direct measurements of the heat exchanger surface temperature and the fluid velocity field inside the crystallizer. Liquid Crystal Thermometry revealed that the local heat transfer is higher in the m...

The Ground Air Heat Exchanger (EAHE) is an integrated passive heating and cooling system for many greenhouses, industrial residential building applications. Reduces loads by transferring heat between ventilated air the ground. In this paper, performance of EAHE was studied numerically using the ESP-r program under weather soil conditions in Al-Diwaniyah city (southern Iraq), connecting pip...

1Thermal Engineering, IES College of Tech. Bhopal, Madhya Pradesh, India. 2Assistant Professor, Dept. of Mechanical Eng., IES College of Tech. Bhopal, Madhya Pradesh, India. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract In modern life as we seen that the requirement of space heating and coolin...

The U-type medium-deep borehole ground heat exchanger BGHE is a new form of utilization geothermal energy and there has been relatively little research on it. This paper introduces the structure working principle BGHE. control equations based characteristics transfer model are established creatively. initial boundary conditions circulating fluid rock soil determined. And reliability simulation ...

The thermal performance of a heat exchanger is important for the potential application in an integrated solar cell/module and thermoelectric generator (TEG) system. Usually, the thermal performance of a heat exchanger for TEGs is analysed by using 1D heat conduction theory which ignores the detailed phenomena associated with thermo-hydraulics. In this paper, thermal and momentum transports in t...

Abstract Various combinations of objective functions and design variables have been considered in several optimization studies ground heat exchangers (GHEs). In this study, the optimum values coil pitch diameter a helical-shaped GHE were determined to maximize its convection transfer rate. Central composite was used determine dimensions be modeling. Nine models generated Fusion360 which then ex...

The earth’s surface acts as a huge solar collector, absorbing radiation from the sun. In the UK, the ground maintains a constant temperature of 11-13oC several metres below the surface all the year around.1 Among many other alternative energy resources and new potential technologies, the ground source heat pumps (GSHPs) are receiving increasing interest because of their potential to reduce prim...