In this research, a water-water heat pump system using waste water as a heat source, a type that is not often used in Turkey and the World, was experimentally modeled. The experiments were performed under the conditions of simulated waste water temperature values of 20 °C, 30 °C and 40 °C. Inlet and outlet water temperatures of the evaporator and condenser, water flow rates in the evaporator an...

The residue of ground coffee obtained after the brewing process (spent coffee) still contains various functional components with high antioxidant capacity and health benefits, but no attempts have been made to use it as a resource to produce value-added food ingredients. This study evaluates the antioxidant activity of ethanol or hot water extracts from the residues of coffee after brewing. An ...

This paper presents the preliminary modelling perspectives of an ongoing project where a flexible simulation tool for component and system analysis of district heating consumer installations is developed. The simulation tool makes it possible to simulate district heating consumer installations containing water based central heating systems, domestic hot tap water systems, buildings as well as l...

In low-heating-energy buildings heat pumps have become an attractive heating system due to a notable reduction of the space heating requirements and the introduction of low temperature heating systems. Comfort cooling becomes also more important, especially in lightweight buildings with large south-oriented windows, which partially tend to overheat in summer. A heat pump has the unique feature ...

To realize smart grids, there is a need for flexible supply and demand of electricity. Conventional heating systems in the Netherlands are based on gas, but new innovative systems, such as heat pumps and micro-CHPs, consume or produce electricity. If the demand for heat and the production/consumption of electricity is decoupled by using a hot water buffer, these heating systems provide the flex...

The predominant microorganisms in samples taken from shower heads in residences in the Korean city "N" were Stenotrophomonas maltophilia, Sphingomonas paucimobilis, Acidovorax temperans, and Microbacterium lacticum. Legionella was not detected in this case. The volatile organic compounds (VOCs) vinylacetate, NN-DMA, cis-1,2-dichloroethylene, epichlorohydrin, and styrene were measured in five ty...

HISTORICAL DEVELOPMENT: The use of hyperthermia (heat) in the treatment of malignant tumors is as old as medicine itself. For example, the 5000-year old Edwin Smith Surgical Papyrus mentions heat as potential treatment for breast cancer [1]. Hippocrates, the father of medicine, proposed that surface tumors should be cauterized by application of hot iron. In modern times, more advanced methods (...

A major problem in the production, storage and marketing of nuts is the infestation of insect pests such as codling moth, naval orangeworm and Indian meal moth. Present and potential quarantine treatments for both domestic and international nut markets include chemical fumigation, ionizing radiation, controlled atmosphere, cold treatment, conventional hot air or water heating and dielectric hea...

In this study a new desalination unit is established. It has four cells such as cooling cell, heating cell, evaporation cell and condensation cell. Seawater is pumped into cooling cell to be preheated and then goes to evaporation cell. In the new desalination unit the evaporation and condensation cell is heated and cooled by the heating and cooling cells respectively. The heating of the evapora...

Microwave technology is a highly effective approach to fast and uniform heating. This article investigates that the microwave heating as a novel method is used to rapidly foam and actuate biocompatible and biodegradable shape memory crosslinked-polycaprolactone (c-PCL) foams. The optical microscope proves that the resulting c-PCL foams have homogenous pore structure. Mechanical behavior and sha...