One of world’s largest uses of energy is the heating and cooling of buildings. Ground Source Heat Pumps (GSHP) provide a more energy efficient way to meet building energy needs than conventional alternatives. At a relatively shallow depth, the ground temperature is nearly constant year round providing a reliable heat source or sink for the operation of a heat pump. The design of such systems is...

In the recent attempts to stimulate alternative energy sources for heating and cooling of buildings, emphasis has been put on utilisation of the ambient energy from ground source and other renewable energy sources. Exploitation of renewable energy sources and particularly ground heat in buildings can significantly contribute towards reducing dependency on fossil fuels. This paper highlights the...

Aalto New Campus Complex (ANCC) is a recently inaugurated educational facility at University, located in Otaniemi (Espoo), Finland. Within over 40,000 m2, it comprises two faculties, shopping center, recreational areas, and metro station. ANCC also large-scale application of Ground Source Heat Pump (GSHP)–Borehole Thermal Energy Storage (BTES) Finland, comprising an irregular BTES field 74 bore...

Ground-source heat pump (GSHP) systems can achieve a higher coefficient of performance than conventional airsource heat pump (ASHP) systems because the ground, which functions as the heat source or sink, is at a higher temperature in winter and lower in summer than the air temperature (Kavanaugh 1992; Kavanaugh et al 1997). In addition, there will likely be some mitigation against the effects o...

This study evaluates the performance of air source heat pump (ASHP) and ground source heat pump (GSHP) systems individually and as part of their associated heating and cooling distribution systems in two semi-attached houses. Over the monitoring period, the performance of both heat pumps exceeded manufacturer and EnerGuide ratings, with Coefficients of Performance (COPs) above 5 in the cooling ...

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 work presented in this thesis focuses on reducing the energy demand of a residential building by using a coupled ground-source heat pump/energy recovery ventilation (GSHP-ERV) system to present a novel approach to space condition and domestic hot water supply for a residence. The proposed system is capable of providing hot water on-demand with a high coefficient of performance (COP), thus e...

The presence of nitrogen fixers within the genus Pseudomonas has been established and so far most isolated strains are phylogenetically affiliated to Pseudomonas stutzeri. A gene ortholog neighborhood analysis of the nitrogen fixation island (NFI) in four diazotrophic P. stutzeri strains and Pseudomonas azotifigens revealed that all are flanked by genes coding for cobalamin synthase (cobS) and ...

This article studies the potential combination of direct ground cooling (DGC) with district heating (DH) and source heat pumps (GSHP) to compare required borehole depths needed drilling areas. It also examines two different sizing approaches optimize investment costs The results show that in most cases are shorter for DGC DH than GSHP combination. is demonstrated optimal range outlet temperatur...

Ground Source Heat Pumps (GSHP) are economically and environmentally advantageous for the heating and cooling of buildings, provided that the long-term sustainability of the thermal exploitation of the soil is ensured. In particular, the performance of a closed-loop Borehole Heat Exchanger (BHE) strongly depends on the geometrical and physical properties of its components and on the thermo-hydr...