When large capacity distributed generation including photovoltaic (PV) systems are installed in power systems, reverse power flow from PV systems may cause problem of surplus electric power. To reduce the reverse power flow without the reduction of PV power generation, energy management of customer equipment such as electric water heater is one of the solutions. Therefore, cooperative control o...

the goal of this study was to compare the effect of heater probe thermocoagulation for massive bleeding of peptic ulcers with a control group. between march 1992 and august 1995 we used heater probe thermocoagulation endoscopically to treat 42 patients with active ugl bleeding or nonbleeding visible vessels at the base of ulcer craters within 2-3 hours of admission. we also selected 42 patients...

Appropriate technology for the conversion of solar radiation to thermal energy is vital for food dehydration. Commercial producers of dried foods need reliable drying technologies for continuity technologies for continuity of production. However, solar radiation is not available whenever it is needed to drying. This limitation discourages many of these producers from investing in solar technolo...

––Based on technology and economy, a design of explosion-proof heater of bunched pipeline is mentioned in this paper to solute the problems of the present heater which is used to heat crude oil in winter. The structure and working principle of this new heater are introduced. And the function of the new heater’s swirl plate is described, before the heater power of the new heater is analyzed. The...