Geothermal Heat Pumps, or Ground Source Heat Pumps (GSHP), are systems combining a heat pump with a ground heat exchanger (closed loop systems), or fed by ground water from a well (open loop systems). They use the earth as a heat source when operating in heating mode, with a fluid (usually water or a water-antifreeze-mixture) as the media transferring the heat from the earth to the evaporator o...

The threat of the global warming is alarming. The increase in oil prices remains a persistent worry and today’s energy challenges are truly critical. In this context, heat pumps in the residential sector appear to be an interesting solution to reduce energy consumption and emissions of greenhouse gases. The French government has developed, under the leadership of the “Grenelle of the environmen...

background: in the present times, arsenic poisoning contamination in the ground water has caused lots of health‑related problems in the village population residing in middle gangetic plain. in bihar, about 16 districts have been reported to be affected with arsenic poisoning. for the ground water and health assessment, simri village of buxar district was undertaken which is a flood plain region...

The paper presents various solutions for water loop heat pump systems. Systems with pumps connected by a are an economically attractive proposition. They allow significant savings. In the winter months, they achieve up to 60% energy savings shopping centers. On annual basis, reach 23%. It is also important note possibility of additional use "free-cooling" cooling, which allows reduction in oper...

Pump intake is designed to provide adequate water supply to pumps. It is essential to design the pump intake to provide fairly uniform and swirl free flow to pumps. However, it is not always possible due to site constraints. Investigation of pump intake is required prior to installing the pumps at site. There are two approaches (experimental and numerical) followed for such investigation. The p...

Electroosmotic pumps employing silica frits synthesized from potassium silicate as a stationary phase show strong electroosmotic flow velocity and resistance to pressure-driven flow. We characterize these pumps and measure an electroosmotic mobility of 2.5 × 10(-8) m(2)/V s and hydrodynamic resistance per unit length of 70 × 10(17) Pa s/m(4) with a standard deviation of less than 2% even when v...

[1] Box models of the ocean/atmosphere CO2 system rely on mechanisms at polar outcrops to alter the strength of the ocean’s organic carbon pump. GCM-based carbon system models are reportedly less sensitive to the same processes. Here we separate the carbon pumps in a three-box model and the GCM-based Princeton Ocean Biogeochemistry Model to show how the organic pumps operate in the two kinds of...