In this paper we describe a novel long-term microhotplate temperature sensor calibration technique suitable for Built-In Self Test (BIST). The microhotplate thermal resistance (thermal efficiency) and the thermal voltage from an integrated platinum-rhodium thermocouple were calibrated against a freshly calibrated four-wire polysilicon microhotplate-heater temperature sensor (heater) that is not...

The 3ω method is popular for thermal conductivity measurements. It consists of a strip heater above a substrate, and the results are usually based on approximate solutions of the heat conduction equation for simplified heating in which the heater is assumed to be a thin plate. Through numerical studies, it is found that a finite heater thickness has an effect on the value of the thermal conduct...

A new triangular shape solar distillation system is fabricated using locally available materials by integrating with PV panel connected to DC water heater. It designed for the first time distill saline or seawater heat energy directly (to sample water) and indirectly (through heater water). The trough made of Plexiglass painted in black color which placed inside frame UPVC pipe. performance sti...

The biggest problem faced by the world these days is pure drinkable water, and in a few years, water will not be easily available, as it becoming brackish saline due to pollution. By using solar energy, still can produce which used for drinking, cooking, also industrial purposes. In this research, based on clean technology energy drive system that operated with an approximately negligible maint...

A mineralogical study was undertaken of air heater deposits in a 300 MWe pf boiler located in Western Australia to understand the deposit formation in air heater sections of boiler as an aid to implement possible remediation actions. Several air heater deposit samples were collected in the selected regions of the air heater along with samples of the feed coal, bottom ash and fly ash for compari...

The effect of the discharge pressure on the performance of the trans-critical CO2 heat pump with a low gas-cooler outlet temperature is experimentally investigated on a test rig of water source heat-pump water heater. The optimal discharge pressure of the trans-critical CO2 heat pump is investigated under different external operation conditions. When the tap-water temperature is low, the charac...

A total of 292 sows, at three experimental stations (Auburn, Texas A&M, Texas Tech), was used to determine the effects of depriving sows of feed and(or) water before weaning on reproductive performance. The four treatments were arranged as a 2 X 2 factorial to evaluate two periods of feed deprivation (0 and 48 h) and two periods of water deprivation (0 and 24 h) before weaning. Sows were allowe...

Fouling of membranes decreases the applicability of the nanofiltration (NF) process, and thus a deeper understanding of membrane fouling is needed. Fouling and retention of different NF membranes by model feed waters was investigated in a laboratory-scale filtration unit. The model waters were composed so as to imitate the characteristics of chemically pre-treated surface water. No differences ...

Waste heat recovery is common in high-temperature water electrolysis production, but the latent from hydrogen–water mixture not fully utilized, and electric heater to generate steam consumes much energy. In this research, a cascade pump proposed recover products steam. The can save as 65% energy compared with single heater. Although some cases, enough sufficient steam, it still 46.1% of Also, r...