Results 41 to 50 of about 15,962 (230)
Multi-stage quantum absorption heat pumps
, 2014 It is well known that heat pumps, while being all limited by the same basic thermodynamic laws, may find realization on systems as "small" and "quantum" as a three-level maser. In order to quantitatively assess how the performance of these devices scales
Correa, Luis A.
core +1 more source
Failure Diagnosis System for Absorption Chiller/Heater.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1995 Recently, the absorption chiller/heater is attracting interest because it delivers airconditioning without using fluorocarbons. Practically, it requires periodical or non-periodical maintenance. It is difficult to detect failures except in summertime with large refrigerant load and, moreover, human expertise is needed for discrimination of their origin.
Yoshio Ozawa +6 more
openaire +2 more sources
Advanced Materials Technologies, EarlyView.The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz +5 more
wiley +1 more source
Compact device for mass transfer between liquid films and vapour or gas [PDF]
, 2008 University Carlos III of Madrid (Spain) offers a method and device for mass transfer between liquid and vapour or gas. Applications to absorbers and desorbers in absorption chiller technology, evaporators, condensers and chemical reactors.
Acosta Iborra, Antonio
core +1 more source
Advanced Science, EarlyView.This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong +5 more
wiley +1 more source
Space cooling using geothermal single‐effect water/lithium bromide absorption chiller
Energy Science & Engineering, 2021 This research is proposed to fully investigate the performance of a single‐effect water/lithium bromide absorption chiller driven by geothermal energy. Since absorption cycles are considered as low‐grade energy cycles, this innovative idea of rejecting ...
Mamdouh El Haj Assad +6 more
doaj +1 more source
Energy Science &Engineering, EarlyView.A deep reinforcement learning–based control architecture is proposed to coordinate heat pumps, thermal storage, renewable energy, and demand response in data center waste heat recovery systems. The agent learns optimal control actions from system states and reward feedback to achieve electrical–thermal co‐optimization under realistic operational ...
Rendong Shen +5 more
wiley +1 more source
Acta Scientiarum: Technology, 2019 This work aims to transient performance of chiller single effect absorption refrigeration using the LiBr/H2O pair with nominal capacity of 35 kW.
Alvaro Antonio Ochoa Villa +4 more
doaj +1 more source
4E analysis of a SOFC-CCHP system with a LiBr absorption chiller
Energy Reports, 2022 A new system which combined cooling, heating and power (CCHP) and based on a solid oxide fuel cell (SOFC) with a LiBr absorption chiller and water tank is investigated.
Yuhao Xu, Xiaobing Luo, Zhengkai Tu
doaj +1 more source
A residential absorption chiller for high ambient temperatures
International Journal of Refrigeration, 2020 Abstract A standalone, compact, thermally driven ammonia-water absorption chiller designed to deliver a cooling capacity of 10.5 kW at ambient temperatures greater than 40 °C is presented. Heat and mass exchangers with novel microscale features and geometries are employed to minimize the physical size of the system.
Girish Kini +3 more
openaire +2 more sources