Results 21 to 30 of about 1,402 (205)

The Effects of Using Steam to Preheat the Beds of an Adsorption Chiller with Desalination Function

open access: yesEnergies, 2021
Adsorption chillers are a promising alternative to traditional compressor-based devices. Adsorption chillers can be supplied with low- or medium-temperature waste heat or heat from renewable energy sources.
Karol Sztekler   +5 more
doaj   +1 more source

Scheduling of Multiple Chillers in Trigeneration Plants

open access: yesEnergies, 2015
The scheduling of both absorption cycle and vapour compression cycle chillers in trigeneration plants is investigated in this work. Many trigeneration plants use absorption cycle chillers only but there are potential performance advantages to be gained ...
Chris Underwood, Bobo Ng, Francis Yik
doaj   +1 more source

Possibilities of Using Zeolites Synthesized from Fly Ash in Adsorption Chillers

open access: yesEnergies, 2022
Adsorption chillers produce cold energy, using heat instead of electricity, thus reducing electrical energy consumption. A major industrial waste, fly ash, can be converted to zeolite and used in adsorption chillers as an adsorbent.
Agata Mlonka-Mędrala   +6 more
doaj   +1 more source

Exergetic optimization of absorption chillers – A case study

open access: yesCase Studies in Thermal Engineering, 2021
The best way to meet the European Union's energy awareness goals is to use a heat pump/refrigerator that requires renewable energy or waste heat to operate. Absorption machines are often powered by renewable energy or waste heat.
Gábor L. Szabó
doaj   +1 more source

Study on Relative COP Changes with Increasing Heat Input Temperatures of Double Effect Steam Absorption Chillers

open access: yesMATEC Web of Conferences, 2016
Absorption chillers at cogeneration plants generate chilled water using steam supplied by heat recovery steam generators. The chillers are mainly of double effect type.
Abd Majid Mohd Amin, Nordin Adzuieen
doaj   +1 more source

Formulation of Coefficient of Performance Characteristics of Water-cooled Chillers and Evaluation of Composite COP for Combined Chillers

open access: yesEnergies, 2020
The Coefficient of Performance of an ordinary water-cooled chiller is presented as a relationship with the chiller load factor and cooling water temperature. However, the cooling water temperature fluctuates according to the processed heat of the cooling
Toru Yamamoto   +2 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

A Modified DOE-2 Model for Typical Performance of Absorption Chillers and its Application

open access: yesZhileng xuebao, 2007
LiBr-water absorption chillers are commonly adopted in multifunction energy systems. The empirical part-load performance model for chillers presented by DOE-2 is one of the analytical methods to solve chiller performances.
杨承, 杨泽亮, 蔡睿贤
doaj   +2 more sources

Research on performance of refrigeration centrifugal compressor with gas bearings for water chillers

open access: yesEnergy Reports, 2022
As an important device for water chillers, the centrifugal refrigeration compressor with gas bearings has new features compared with traditional oil and magnetic bearings.
Kexin Yi   +5 more
doaj   +1 more source

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

open access: yesAdvanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas   +11 more
wiley   +1 more source

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