Results 231 to 240 of about 1,062,238 (285)

Water Vapor: Stratospheric Injection by Thunderstorms

Science, 1971
Infrared radiometric inference measurements of the mass of water vapor injected into the lower stratosphere and upper troposphere by a number of plains thunderstorms show an average threefold increase over the fair weather background mass of water vapor.
P M, Kuhn, M S, Lojko, E V, Petersen
openaire   +2 more sources

Study of nitrogen flowing afterglow with mercury vapor injection

The Journal of Chemical Physics, 2014
The reaction kinetics in nitrogen flowing afterglow with mercury vapor addition was studied by optical emission spectroscopy. The DC flowing post-discharge in pure nitrogen was created in a quartz tube at the total gas pressure of 1000 Pa and discharge power of 130 W.
V, Mazánková, D, Trunec, F, Krčma
openaire   +2 more sources

Water vapor injection into the stratosphere by Hunga Tonga-Hunga Ha’apai

Science, 2022
Large volcanic eruptions, although rare events, can influence the chemistry and the dynamics of the stratosphere for several years after the eruption. Here we show that the eruption of the submarine volcano Hunga Tonga-Hunga Ha’apai on 15 January 2022 injected at least 50 teragrams of water vapor directly into the stratosphere.
Vömel, Holger, Evan, Stephanie, Tully, Matt   +2 more
openaire   +2 more sources

Condensation and Collapse of Vapor Bubbles Injected in Subcooled Pool

Microgravity Science and Technology, 2010
We focus on condensation and collapse processes of vapor bubble(s) in a subcooled pool. We generate the vapor in the vapor generator and inject it/them to form vapor bubble(s) at a designated temperature into the liquid at a designated degree of subcooling.
Ichiro Ueno, Ryota Hosoya, Chungpyo Hong
openaire   +1 more source

The Effectiveness of Vapor-Injection for an Inverter Air-Source Heat Pump Compared With Vapor-Return

Applied Thermal Engineering
Dehu Qv, Long Ni, Jijin Wang
exaly   +2 more sources

Optimization of injection holes in symmetric and asymmetric scroll compressors with vapor injection

International Journal of Refrigeration, 2012
Abstract A simplified numerical model was developed to analyze the optimum injection-hole diameter and angle for symmetric and asymmetric scroll compressors with vapor injection. The present numerical model was validated by comparing the predictions with the measured data for a water-to-water heat pump.
Il Yong Cho, Suk Bin Ko, Yongchan Kim
openaire   +1 more source

EXERGETIC ANALYSIS OF A VAPOR INJECTION COMPRESSION HEAT PUMP

SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings, 2022
The paper presents an exergy analysis of a heat pump with a steam injection. Different refrigerants as R290, R152A and R1234yf are considered. Constructive schemes such as two-stage heat pumps or cascade couplings are known and used to reduce the temperature at the compressor discharge level, but the presence of two or more compressors increases the ...
Claudia Ionita, Alexandru Dobrovicescu, Daniel Dima   +2 more
openaire   +1 more source

Modeling of Experiments on Water Vaporization for Gas Injection

SPE Eastern Regional Meeting, 2004
Abstract Dry gas injected into wells will vaporize water from the near wellbore zone. The vaporization starts from the well and proceeds outward. Gas flowing to producers is in equilibrium with the reservoir brine, but water will be vaporized because the pressure drop that occurs toward the wellbore increases the ability of the gas to ...
Zuluaga Elizabeth, Larry Lake
openaire   +1 more source

Low-temperature heat pipes with vapor injection

Journal of Engineering Physics, 1977
Two types of heat pipe with low-pressure injectors are considered. The pipes are intended for operation on any orientation in the gravitational field.
Yu. F. Gerasimov, V. M. Kiseev, Yu. F. Maidanik, Yu. E. Dolgirev   +3 more
openaire   +1 more source

A comparison of the accuracy of the Siemens injection vaporizer and the Enfluratec 3 vaporizer.

Anaesthesiologie und Reanimation, 1994
The accuracy of two Siemens injection vaporizers was examined under operating theatre conditions. For comparison, two Enfluratec 3 vaporizers were tested. The concentrations of enflurane produced by the vaporizers were measured both by an anaesthetic agent monitor and by chromatography.
D A, Cozanitis, P H, Rosenberg, J D, Merrett   +2 more
openaire   +1 more source