Previous studies have shown that the amount of energy consumed by mechanical cooling can be significantly reduced indirect evaporative (IEC) process. By increasing heat recovery efficiency air handling units (AHUs), sensible performance achieved with IEC process for a significant part season. This study determined under which outdoor conditions achieved. With IEC, indoor humidity load cannot ad...

This paper presents experimental results of an inherently safe liquid cooling system. A test rig is operated at Hamburg University of Technology in order to prove the concept and gather first data for electronics cooling in modern civil aircraft. The cooling system uses a dielectric working fluid for the natural circulation in a looped thermosyphon operating in both oneand two-phase mode. First...

Effective mission critical installations must address the known problems and challenges relating to current and past data center designs. This paper presents a categorized and prioritized collection of cooling system challenges and requirements as obtained through systematic user interviews.

This paper proposes a new approach of cooling system for home. The main advantages of this cooling system are it consumes very low power, no emission of harmful gas and support for health. The basic principle of the system is free cooling is taking place when the external ambient air entropy is less than the indoor air enthalpy and the cool external air is transferred to the building room direc...

A cooling water system is used in industrial processes to cool down hot process streams from their supply conditions to target temperatures. A cooling water system is comprised of three major components, namely a cooling tower, a heat exchanger network (HEN), and a pumping system; these elements have strong interactions with each other and therefore must be optimized simultaneously to yield an ...

Biomass gasification is the process of converting biomass into a combustible gas suitable for use in boilers, engines, and turbines to produce combined cooling, heat, and power. This paper presents a detailed model of a biomass gasification system and designs a multigeneration energy system that uses the biomass gasification process for generating combined cooling, heat, and electricity. Energy...

A methodology for assessing solar cooling technologies is proposed. The method takes into account location specific boundary conditions such as the cooling demand time series, solar resource availability, climatic conditions, component cost and component performance characteristics. This methodology evaluates the techno-economic performance of the solar collector/chiller system. We demonstrate ...

The objective of this study was to investigate the cooling performance characteristics of an electrical air conditioning system using R744 as an alternative of R-134a for a fuel cell electric vehicle. In order to analyze the cooling performance characteristics of the air conditioning system using R744 for a fuel cell electric vehicle, an electrical air conditioning system using R744 was develop...

temperature and humidity are two important parameters affecting the quality and quantity of greenhouse products so two double greenhouses were manufactured in 3.5, 40 and 11 m in height, length and width respectively in agricultural research center of jiroft and kahnooj to study these effects. both of greenhouses are similar in materials, final height, gutter height, covering and field operatio...