Results 51 to 60 of about 2,713,229 (200)

Effect of Refrigerant Charge on the Performance of Air-source Heat Pump Water Heater

open access: yesZhileng xuebao, 2018
In this paper, the effects of a refrigerant charge on the system performance of a heat pump water heater and the regulating characteristics of the electronic expansion valve were studied experimentally.
Yuan Zhaoyang   +3 more
doaj  

The Effect of Workloads and Compensation on Work Motivation in Sasmita Jaya Foundation [PDF]

open access: yes, 2019
The complexity of motivational problems has always been an obstacle to employee performance. Therefore, it is important to do research on the causal factors. To answer this problem, quantitative approaches and regression analysis are used. The population
Harras, H. (Hadyati)
core  

Measurements of Antenna Surface for a Millimeter-Wave Space Radio Telescope II; Metal Mesh Surface for Large Deployable Reflector [PDF]

open access: yes, 2012
Large deployable antennas with a mesh surface woven by fine metal wires are an important technology for communications satellites and space radio telescopes.
Kamegai, Kazuhisa, Tsuboi, Masato
core   +1 more source

Determination of Coefficient of Performance of Stirling Refrigeration sm

open access: yesInternational Journal of Innovative Technology and Exploring Engineering, 2019
Refrigeration is a process of reducing the temperature of the desired space under atmospheric temperature. The present system focuses on the design and fabrication of a Stirling refrigeration system with a β-type configuration. The refrigerants carbon dioxide and helium are used and the efficient among them is determined.
Sampath Suranjan   +6 more
openaire   +1 more source

Performance evaluation and sensitivity analysis of a low- capacity single-effect LiBr-H2O absorption cooling system using energy and exergy modeling

open access: yesJournal of Applied Science and Engineering
In industrialized cooling systems, LiBr − H₂O is widely utilized as the predominant working fluid, particularly in absorption systems for maintaining the thermal comfort of building occupants.
Syed Maaz Hasan   +5 more
doaj   +1 more source

The assessment of applicability of single-stage piston long-stroke low-speed compressors in low-temperature refrigeration machines [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The work processes and integral characteristics of low-temperature ammonia single-stage piston longstroke low-speed compressors are considered. A method for calculating the actual working process of a stage of such a compressor is presented, taking into
V. L. Yusha   +2 more
doaj   +1 more source

The effect of flow coefficient on the design of miniature centrifugal impeller [PDF]

open access: yes, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011)   +2 more
core  

Studi Variasi Laju Pengeluaran Kalor Kondensor High Stage Sistem Refrigerasi Cascade Menggunakan Refrigeran MC22 dan R404A dengan Heat Exchanger Tipe Concentric Tube

open access: yesJurnal Teknik ITS, 2013
Masih adanya kekurangan pada alat penukar panas tipe compact yang digunakan pada sistem refrigerasi cascade sebelumnya, pada studi eksperimental ini dibuat kembali suatu sistem refrigerasi cascade dengan alat penukar panas tipe concentric.
Faberto Subrida   +1 more
doaj  

Studi Variasi Laju Pelepasan Kalor Kondensor High Stage Sistem Refrigerasi Cascade R22 Dan R404a Dengan Heat Exchanger Tipe Concentric Tube

open access: yesJurnal Teknik ITS, 2014
Sistem refrigerasi cascade merupakan kombinasi dua sistem refrigerasi tunggal yang digunakan untuk mendapatkan temperatur sangat rendah dimana aplikasinya adalah sebagai cold storage.
Royyan Firdaus   +1 more
doaj  

Effect of a Heating System Using a Ground Source Geothermal Heat Pump on Production Performance, Energy-Saving and Housing Environment of Pigs

open access: yesAnimals, 2020
This study examined the effects of a heating system using a ground source geothermal heat pump (GHP). A GHP was installed in a pig house, and a comparative analysis was performed between the GHP and the control (conventional heating system) in terms of ...
Hong Seok Mun   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy