scholarly journals The impact of the weather conditions on the cooling performance of the heat pump driven by an internal natural gas combustion engine

2015 ◽  
Vol 92 ◽  
pp. 02029
Author(s):  
Martina Janovcová ◽  
Jozef Jandačka ◽  
Milan Malcho
Keyword(s):  
Natural Gas ◽  
Heat Pump ◽  
Combustion Engine ◽  
Weather Conditions ◽  
Gas Combustion ◽  
Cooling Performance ◽  
Natural Gas Combustion ◽  
The Impact

scholarly journals Indicated Mean Effective Pressure Oscillations in a Natural Gas Combustion Engine

2009 ◽  
Vol 64 (5-6) ◽  
pp. 393-398 ◽  
Author(s):  
Grzegorz Litak ◽  
Michał Gęca ◽  
Bao-Feng Yao ◽  
Guo-Xiu Li
Keyword(s):  
Natural Gas ◽  
Combustion Engine ◽  
Combustion Process ◽  
Spark Ignition Engine ◽  
Effective Pressure ◽  
Gas Combustion ◽  
Indicated Mean Effective Pressure ◽  
Natural Gas Combustion ◽  
Measured Pressure ◽  
Lean Conditions

Fluctuations in a combustion process of natural gas in the internal spark ignition engine have been investigated. We measured pressure of the cyclic combustion and expressed its cyclic oscillations in terms of indicated mean effective pressure per cycle. By applying the statistical and multifractal analysis to the corresponding time series we show the considerable changes in engine dynamics for a different equivalence ratio decreases from 0.781 to very lean conditions.

Partially Stratified Charge Natural Gas Combustion: The Impact of Uncertainties on LES Modeling

2015 ◽  
Author(s):  
Lorenzo Bartolucci ◽  
Stefano Cordiner ◽  
Vincenzo Mulone ◽  
Vittorio Rocco ◽  
Edward Chan
Keyword(s):  
Natural Gas ◽  
Gas Combustion ◽  
Stratified Charge ◽  
Natural Gas Combustion ◽  
The Impact

scholarly journals CFD-3D Analysis of a Light Duty Dual Fuel (Diesel/Natural Gas) Combustion Engine

2014 ◽  
Vol 45 ◽  
pp. 929-937 ◽  
Author(s):  
Enrico Mattarelli ◽  
Carlo Alberto Rinaldini ◽  
Valeri I. Golovitchev
Keyword(s):  
Natural Gas ◽  
Combustion Engine ◽  
Dual Fuel ◽  
3D Analysis ◽  
Gas Combustion ◽  
Light Duty ◽  
Natural Gas Combustion

Research of pressure influence in the gas supply system on the energy consuption level of gas devices

2019 ◽  
Vol 6 (2) ◽  
pp. 56-63
Author(s):  
L. D. Pylypiv ◽  
І. І. Maslanych
Keyword(s):  
Natural Gas ◽  
Residential Buildings ◽  
Supply System ◽  
Normal Operation ◽  
Gas Combustion ◽  
Efficient Operation ◽  
Gas Consumption ◽  
Natural Gas Combustion ◽  
Gas Supply

There are investigated the influence of operating pressures in the gas supply system on the level of such energy indicators as efficiency, gas flow and gas overrun by gas equipment in residential buildings. There is established a relationship between the values of operating pressures in the gas supply system and the gas consumption level of household appliances. The causes of insufficient pressure in the gas networks of settlements are analyzed in the article. There is also developed an algorithm for calculating the change in the efficiency of gas appliances depending on the operational parameters of the gas network. It has been found that the most efficient operation of gas appliances is observed at an overpressure at the inlet of gas appliances of about 1200 Pa.To ensure the required quality of natural gas combustion among consumers and minimize gas consumption there are justified the following measures in the article: coordinating a domestic regulatory framework for assessing the quality of natural gas with international norms and standards; improving the preparation of gas coming from local wells before supplying it to gas distribution networks; auditing low pressure gas pipelines and reconstructing areas affected by corrosion; ensuring standard gas pressure in the network for the normal operation of domestic gas appliances; stating quality indicators of natural gas combustion by gas sales organizations.

Multiflame Patterns in Swirl-Driven Partially Premixed Natural Gas Combustion

2002 ◽  
Vol 125 (1) ◽  
pp. 40-45 ◽  
Author(s):  
K. P. Vanoverberghe ◽  
E. V. Van den Bulck ◽  
M. J. Tummers ◽  
W. A. Hu¨bner
Keyword(s):  
Natural Gas ◽  
Combustion Chamber ◽  
Gas Flow ◽  
State Transition ◽  
Gas Combustion ◽  
Bifurcation Phenomena ◽  
Major Species ◽  
Partially Premixed ◽  
Natural Gas Combustion ◽  
Low Nox Emission

Five different flame states are identified in a compact combustion chamber that is fired by a 30 kW swirl-stabilized partially premixed natural gas burner working at atmospheric pressure. These flame states include a nozzle-attached tulip shaped flame, a nonattached torroidal-ring shaped flame (SSF) suitable for very low NOx emission in a gas turbine combustor and a Coanda flame (CSF) that clings to the bottom wall of the combustion chamber. Flame state transition is generated by changing the swirl number and by premixing the combustion air with 70% of the natural gas flow. The flame state transition pathways reveal strong hysteresis and bifurcation phenomena. The paper also presents major species concentrations, temperature and velocity profiles of the lifted flame state and the Coanda flame and discusses the mechanisms of flame transition and stabilization.

Sign in / Sign up

Export Citation Format

Share Document