System Simulations to Evaluate the Potential Efficiency of Humid Air Motors
(2013) SAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013- Abstract
- In the quest for efficiency improvement in heavy duty truck engines, waste heat recovery could play a valuable role. The evaporative cycle is a waste heat recovery technology aimed at improving efficiency and decreasing emissions. A humid air motor (HAM) uses the waste heat from the exhaust of the engine to humidify the inlet air; this humid air, with higher specific heat, reduces NOx emission to a greater extent [1] [2]. Despite this benefit of emission reduction, the increase or decrease in efficiency of the humid air motor compared to the conventional engine is not discussed in the literature [3] [4] [5]. In this paper, an attempt is made to study the efficiency of the HAM using system model simulations of a 13-liter heavy duty Volvo... (More)
- In the quest for efficiency improvement in heavy duty truck engines, waste heat recovery could play a valuable role. The evaporative cycle is a waste heat recovery technology aimed at improving efficiency and decreasing emissions. A humid air motor (HAM) uses the waste heat from the exhaust of the engine to humidify the inlet air; this humid air, with higher specific heat, reduces NOx emission to a greater extent [1] [2]. Despite this benefit of emission reduction, the increase or decrease in efficiency of the humid air motor compared to the conventional engine is not discussed in the literature [3] [4] [5]. In this paper, an attempt is made to study the efficiency of the HAM using system model simulations of a 13-liter heavy duty Volvo engine with a humidifier. The commercial software GT-SUITE is used to build the system model and to perform the simulations. The efficiency improvement of the HAM comes from the expansion of the vapor mass flow produced as a result of humidification. An effort is also made to understand the relationship between the humidified engine and its efficiency. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4318388
- author
- Narayanan, Prakash LU ; Tunér, Martin LU ; Tunestål, Per LU and Johansson, Bengt LU
- organization
- publishing date
- 2013
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Internal Combustion Engines, Diesel Engines, Humid Air Motor
- host publication
- SAE Technical Paper Series
- publisher
- Society of Automotive Engineers
- conference name
- SAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013
- conference location
- Soeul, Korea, Republic of
- conference dates
- 2013-10-21 - 2013-10-23
- external identifiers
-
- other:2013-01-2646
- scopus:84890321317
- ISSN
- 0148-7191
- DOI
- 10.4271/2013-01-2646
- language
- English
- LU publication?
- yes
- id
- 6e0ab5c4-f23c-4406-b646-9872444a8482 (old id 4318388)
- alternative location
- http://papers.sae.org/2013-01-2646/
- date added to LUP
- 2016-04-01 14:29:46
- date last changed
- 2022-02-19 19:13:11
@inproceedings{6e0ab5c4-f23c-4406-b646-9872444a8482, abstract = {{In the quest for efficiency improvement in heavy duty truck engines, waste heat recovery could play a valuable role. The evaporative cycle is a waste heat recovery technology aimed at improving efficiency and decreasing emissions. A humid air motor (HAM) uses the waste heat from the exhaust of the engine to humidify the inlet air; this humid air, with higher specific heat, reduces NOx emission to a greater extent [1] [2]. Despite this benefit of emission reduction, the increase or decrease in efficiency of the humid air motor compared to the conventional engine is not discussed in the literature [3] [4] [5]. In this paper, an attempt is made to study the efficiency of the HAM using system model simulations of a 13-liter heavy duty Volvo engine with a humidifier. The commercial software GT-SUITE is used to build the system model and to perform the simulations. The efficiency improvement of the HAM comes from the expansion of the vapor mass flow produced as a result of humidification. An effort is also made to understand the relationship between the humidified engine and its efficiency.}}, author = {{Narayanan, Prakash and Tunér, Martin and Tunestål, Per and Johansson, Bengt}}, booktitle = {{SAE Technical Paper Series}}, issn = {{0148-7191}}, keywords = {{Internal Combustion Engines; Diesel Engines; Humid Air Motor}}, language = {{eng}}, publisher = {{Society of Automotive Engineers}}, title = {{System Simulations to Evaluate the Potential Efficiency of Humid Air Motors}}, url = {{http://dx.doi.org/10.4271/2013-01-2646}}, doi = {{10.4271/2013-01-2646}}, year = {{2013}}, }