This study presents experimental and numerical research results in determining an effective borehole thermal resistance of a spiral coil energy pile. A precast high-strength concrete (PHC) energy pile with a spiral coil GHE was installed and thermal response test was carried out to evaluate the...

This paper assesses groundwater recharge under conditions of long-term groundwater pumping at the Ravnik pumping site in Croatia and analyses the groundwater level prediction model used in prior aquifer modelling. The results of model calibration revealed a very low net infiltration rate at the...

Ground source heat pump systems are an energy efficient heating and cooling technology for residential and commercial buildings. The main barrier to adoption is the higher investment cost compared to conventional systems. Where available land area permits, horizontal ground heat exchangers are...

Computer simulation and analysis of a ground source heat pump system with horizontal ground heat exchangers operating in heating (max 5.5kW) and cooling (max 3.3kW) mode was carried out for a typical residential house, with 200m2 of living space, located in Sapporo (Japan). In spite of high...

The Doha ministerial declaration commits industrialised countries to liberalising access for least-developed countries (LDCs) to their markets. Preferential trade policies have diverse impacts on the initiating country and its trading partners. These effects are of concern to scholars and policy...

We calibrate an infinite-horizon model with endogenous growth and unemployment on actual data from the largest countries in the European Union. Two types of balanced-budget fiscal policy experiments are studied. First, the effects of separately changing the tax rates on capital, labor and...

The Earth-Air Heat Exchanger (EAHE) is a device used to improve the thermal condition of built environments, allowing the reduction of electrical energy consumption of traditional air conditioner systems. Fundamentally, its operational principle is based on fluid mechanics and heat transfer,...

The requirements for improvement in the energy efficiency of buildings, mandatory in many EU countries, entail a high level of thermal insulation of the building envelope. In recent years, super-insulation materials with very low thermal conductivity have been developed. These materials provide...

Рассматривается проблема оптимизации режимов лазерного спекания ультрадисперсных металлических порошков, характеризуемая нестационарным теплопереносом в...

Rock salt in China is primarily bedded salt, usually composed of many thin salt layers and interlayers (e.g. anhydrite, mudstone, and glauberite). Thus, the feasibility analysis of abandoned salt caverns located in salt beds to be used as Underground Gas Storage (UGS) facilities is full of...