PULSE-DETONATION STEAM SUPERHEATER

2020 ◽  
Author(s):  
S. M. FROLOV ◽  
◽  
V. A. SMETANYUK ◽  
I. O. SHAMSHIN ◽  
F. S. FROLOV ◽  
...  
Keyword(s):  
Flow Reactor ◽  
Hydrocarbon Fuel ◽  
Steam Superheater ◽  
Industrial Wastes ◽  
Oxygen Mixture ◽  
Gas Mixture ◽  
Pulse Detonation ◽  
Detonation Engine ◽  
Waste Gasification ◽  
Ternary Fuel

In [1], we patented the innovative pulse-detonation steam superheater (PDSS) for deep oxygen-free and pollutant-free gasification of organic municipal and industrial wastes to produce a gas mixture of H2 and CO. The PDSS is essentially the pulse-detonation engine operating on the ternary fuel-oxygen-steam mixture with fuel represented, e. g., by a gas mixture of H2 and CO (energy gas or syngas). The low-temperature steam (375-380 K) is produced by a standard steam generator. Pulsed detonations in the PDSS are achieved due to intermittent spark ignition of the fuel-oxygen mixture followed by fast deflagration-to-detonation transition and transmission of the detonation wave to the ternary fuel-oxygen-steam mixture. It is implied that the PDSS is directly connected to the waste gasification flow reactor and normally operates on the H2-CO energy gas. However, for starting the plant, the PDSS initially operates on any available hydrocarbon fuel or hydrogen.

scholarly journals Influence of Nozzle Type, Divergence Angle and Area Ratio on Impulse of Pulse Detonation Engine

2020 ◽  
Vol 12 (2) ◽  
pp. 35-45
Author(s):  
Sanjeev Kumar DHAMA ◽  
T. K. JINDAL ◽  
S. K. MANGAL
Keyword(s):  
Area Ratio ◽  
Divergence Angle ◽  
Nozzle Geometry ◽  
Oxygen Mixture ◽  
Pulse Detonation Engine ◽  
Pulse Detonation ◽  
Detonation Engine ◽  
Shaped Nozzle ◽  
Divergent Angle ◽  
Thrust Stand

The influence of nozzle geometry on the impulse produced by the single cycle Pulse detonation engine (PDE) was experimentally investigated. For each experiment the nozzles were attached at the end of the engine. The impulse produced by the pulse detonation engine was calculated from the measured thrust. The thrust measurement was done by sliding the engine on the central bar of the thrust stand. The main structure of the basic PDE has a detonation tube with one terminal closed, a Schelkin spiral used as deflagration to detonation device, and a thrust stand to support the structure. Stoichiometric acetylene and oxygen mixture were used as detonation mixture. Various nozzles with a range of divergent angle and area ratios were tested. The calculations of the impulse were made from the thrust pulse for the duration it lasted. The effect of the type of nozzle, divergent angle and area ratio were observed. The bell shaped nozzle with large angle of divergence produced maximum specific impulse of 80 Sec with 20° divergence angle and area ratio of 6.942; maximum impulse was produced by the bell shaped nozzle with a small area ratio of 2.969 and 10° divergence angle. The maximum total impulse obtained was 1200 N-sec.

Feasibility Study of Pulse Detonation Engine Fueled by Biogas

2013 ◽  
Vol 388 ◽  
pp. 257-261 ◽  
Author(s):  
Ahmed G. Dairobi ◽  
Mazlan A. Wahid ◽  
I.M. Inuwa
Keyword(s):  
Clean Development Mechanism ◽  
Alternative Fuels ◽  
Hydrocarbon Fuel ◽  
Power Production ◽  
Thermodynamic Efficiency ◽  
Pulse Detonation Engine ◽  
Pulse Detonation ◽  
The World ◽  
Fuel Resource ◽  
Detonation Engine

The hottest issue toward the environment today is the Clean Development Mechanism (CDM) and Green House Gases (GHG) which influenced climate change. At the same time, the world is facing the crisis of limited reserves of petroleum-based fuel resource which is being continuously depleted. Therefore, these three issues can possibly be overcome by using alternative fuels such as biogas, biodiesel, biomass, biofuel, alcohol, vegetable oils etc. The use of biogas as fuel for Pulse Detonation Engine (PDE) possibly promise great advantages on power production with less emission. This is because PDE operates with higher thermodynamic efficiency by operating on constant volume pressure. Biogas usage will somewhat contributed to the CDM and and lessen the GHG issues. Here through detailed literature review, the challenges such as lower flame speed (compared to hydrocarbon fuel) and biogas impurities are discussed. Combustion characteristics of biogas in detonation mode are also investigated. Strategy is presented here for looking at the possibility of PDE operation using biogas.

scholarly journals Analysis of Equivalence Ratio in an Oxygen Acetylene Mixture

2019 ◽  
Vol 11 (4) ◽  
pp. 171-177
Author(s):  
SHIVAM ◽  
Mehakveer SINGH ◽  
Bharat Ankur DOGRA ◽  
Subhash CHANDER ◽  
T. K. JINDAL
Keyword(s):  
Mass Flow ◽  
Equivalence Ratio ◽  
Oxygen Mixture ◽  
Settling Chamber ◽  
Pulse Detonation Engine ◽  
Filling Fraction ◽  
Pulse Detonation ◽  
Feasible Range ◽  
Detonation Engine ◽  
Valve Opening

The paper presents an exclusive approach to analyze the oxygen and acetylene mixture in a Pulse Detonation Engine setup at PEC. The experiment was carried out by varying the amount of mass flow of acetylene and oxygen into the tube at different pressures in the settling chamber. The equivalence ratio of the acetylene-oxygen mixture with respect to the valve opening time of acetylene and oxygen was plotted. The analysis of equivalence ratio also defines the procedure which involved the cycle of valves and pressure supply to attain different values of filling fraction of the tube. The results experimentally predicted the feasible range of operation at different pressures in the settling chamber of the pulse detonation engine.

scholarly journals Study on Influence of Diameter on Detonation Acoustic Characteristics of Pulse Detonation Engine

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Gui-yang Xu ◽  
Chun-guang Wang ◽  
Yan-fang Zhu ◽  
Hong-yan Li ◽  
Lun-kun Gong ◽  
...  
Keyword(s):  
Acoustic Characteristic ◽  
Pulse Detonation Engine ◽  
Acoustic Characteristics ◽  
Experiment System ◽  
Pulse Detonation ◽  
Impact Noise ◽  
Maximum Duration ◽  
Detonation Engine ◽  
Set Up ◽  
Different Diameters

AbstractThe experiment system of pulse detonation engine is set up to investigate on influence of diameter on detonation acoustic characteristic. The research of detonation acoustic characteristic of pulse detonation engine for four different diameters in different angles is carried out. Results from the test show that as the PDE diameter increasing, there are increases in amplitudes of impact noise in all angles, and the growth rate of amplitude of impact noise in the 90° direction is generally greater than that in the 0° direction. The smaller PDE diameter is, the distance of most obvious directivity at 0° turning to most obvious directivity at 30° is shorter. When the distance is shorter, such as 200 mm, the duration of detonation acoustic is increasing with the increase of PDE diameter, however, when the distance is longer, such as 3000 mm, it is just the opposite. The maximum duration of detonation acoustic is appeared in 3000 mm under 30 mm PDE diameter which reaches to 1.44 ms.

An analytical model for the impulse of a single-cycle pulse detonation engine

2001 ◽  
Author(s):  
E. Wintenberger ◽  
J. Austin ◽  
M. Cooper ◽  
S. Jackson ◽  
J. Shepherd
Keyword(s):  
Analytical Model ◽  
Pulse Detonation Engine ◽  
Single Cycle ◽  
Pulse Detonation ◽  
Detonation Engine ◽  
Cycle Pulse
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