Abstract Heat pump water heaters are highly efficient hot supply systems that effectively utilize the heat of outdoor air via technology. Many studies have been conducted to optimize design and operation from perspective climate change mitigation. Air-source heaters, which absorb emit cold exhaust, can also be expected alleviate urban island effect; however, this has not studied extensively. To...

The recent technological advances in micro/nanotechnology present new opportunities to combine microfluidics with microarray technology for the development of small, sensitive, single-use, point-of-care molecular diagnostic devices. As such, the integration of microarray and plastic microfluidic systems is an attractive low-cost alternative to glass based microarray systems. This paper presents...

We demonstrate that n-doped resistive heaters in silicon waveguides show photoconductive effects with high responsivities. These photoconductive heaters, integrated into microring resonator (MRR)-based filters, were used to automatically tune and stabilize the filter's resonance wavelength to the input laser's wavelength. This is achieved without requiring dedicated defect implantations, additi...

OBJECTIVE To document the epidemiology and risk factors of acute carbon monoxide (CO) poisoning in the west of Iran and specify potentially presentable characteristics. STUDY DESIGN Observational study. PLACE AND DURATION OF STUDY Imam Khomeini Hospital of Kermanshah, Iran, from July 2006 to March 2008. METHODOLOGY This study was conducted using the records of 143 cases of CO poisoning re...

This article is focused on the calculation of heat radiation intensity and its optimization on an aluminum mould surface. The inside of the mould is sprinkled with a special powder and its outside is heated by infra heaters located above the mould surface, up to a temperature of 250°C. By this way artificial leathers in the car industry are produced (e. g. the artificial leather on a car dashbo...

This article is focused on the infrared heating of shell metal moulds and optimization of temperature field on the surface of the mould. The upper part of the mould is heated by infrared heaters, and after the required temperature is attained the inner part of the mould is sprinkled with special PVC powder. The moulds are made of aluminium or nickel alloys. The described mathematical model allo...

Solar heating is one of the important utilities of solar energy both in domestic and industrial sectors. Evacuated tube heaters are a commonly used technology for domestic water heating. However, increasing cost of copper and nickel has resulted in huge initial cost for these types of heaters. Utilizing solar energy more economically for domestic use requires new concept which has low initial a...

This paper proposes a control method for allowing aggregates of thermostatically controlled loads to provide synthetic inertia and primary frequency regulation services the grid. The proposed framework is fully distributed basically consists in modification thermostat logic as function grid frequency. Three strategies are considered: first one, load aggregate provides by varying its active powe...

A significant part of the overall energy consumption of office buildings and households in Europe is consumed for heating. Today's standard is that heaters are controlled by thermostats so that the desired temperatures are maintained for set periods. We now present ConAH (Context Aware Heating) that controls heaters so that heating periods are minimized while keeping the comfort of the occupant...