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Viewing 1 to 23 of 23
Technical Paper
2017-03-28
Author(s): Peri, G., Sambandan, S., and Sathish Kumar, S.
Abstract Cool down of a passenger vehicle cabin is a preferred method to test the efficiency of the vehicle HVAC (Heating, Ventilation and Air Conditioning) system. The intended primary objective of a....
Technical Paper
2017-03-28
Author(s): William, B., Selvaraj, A., Rammurthy, M., Rajaraman, M. et al.
Abstract The modern day automobile customers’ expectations are sky-high. The automotive manufacturers need to provide sophisticated, cost-effective comfort to stay in this competitive world. Air condi....
Journal Article
2017-03-28
Author(s): Li, J. and Hrnjak, P.
Abstract This paper introduces the concept of separation of two-phase flow in condenser as a way to improve condenser efficiency. The benefits of vapor-liquid refrigerant separation and the reason why....
Technical Paper
2017-03-28
Author(s): Sambandan, S., Valencia, M., and S, S.
Abstract In an automotive air-conditioning (AC) system, the heater system plays a major role during winter condition to provide passenger comforts as well as to clear windshield defogging and defrost.....
Journal Article
2017-03-28
Author(s): Hepokoski, M., Curran, A., Gullman, S., and Jacobsson, D.
Abstract Passive sensor (HVAC) manikins have been developed to obtain high-resolution measurements of environmental conditions across a representative human body form. These manikins incorporate numer....
Technical Paper
2017-03-28
Author(s): Feng, L. and Hrnjak, P.
Abstract This paper presents the study of refrigerant charge imbalance between A/C (cooling) mode and HP (heating) mode of a mobile reversible system. Sensitivities of cooling and heating capacity and....
Technical Paper
2017-03-28
Author(s): Vasanth, B., Putcha, U., Sathish Kumar, S., nukala, R. et al.
The main function of mobile air conditioning system in a vehicle is to provide the thermal comfort to the occupants sitting inside the vehicle at all environmental conditions. The function of....
Technical Paper
2017-03-28
Author(s): He, J., Johnston, B., Dhar, D., and Lohmeyer, L.
The natural refrigerant, R744 (CO2), remains a viable solution to replace the high GWP refrigerant R134a which is to be phased out in light-duty vehicles in EU and US market. In this study, t....
Technical Paper
2017-03-28
Author(s): Rungta, R. and Pandit, N.
Abstract A simple and rapid immersion type corrosion test has been successfully developed that discriminates corrosion performance in condensers from various suppliers and with differing manufacturing....
Technical Paper
2017-03-28
Author(s): Andersen, S., Chowdhury, S., Craig, T., Kapoor, S. et al.
Abstract This paper quantifies and compares the cooling performance and refrigerant and fuel cost savings to automobile manufacturers and owners of secondary-loop mobile air conditioners (SL-MACs) usi....
Technical Paper
2017-03-28
Author(s): Venkatappa, S., Koberstein, M., and Liu, Z.
Abstract The refrigerant transition from HFC-134a to HFO-1234yf has proven to be more challenging on controlling refrigerant flow-induced noises generated from automotive air-conditioning (A/C) system....
Technical Paper
2017-03-28
Author(s): Zhang, Q., Meng, Y., Greiner, C., Soto, C. et al.
Abstract In this paper, the tradeoff relationship between the Air Conditioning (A/C) system performance and vehicle fuel economy for a hybrid electric vehicle during the SC03 drive cycle is presented.....
Journal Article
2017-03-28
Author(s): Velivelli, A., Guerithault, D., and Stöwe, S.
Abstract Seat cooling and heating strategies have enhanced human thermal comfort in automotive environments. Cooling/heating strategies also need to focus on the distribution of the seat cooling/heati....
Technical Paper
2017-03-28
Author(s): Atkinson, W., Hill, W., and Mathur, G.
Abstract The EPA has issued regulations in the Final Rulemaking for 2017-2025 Light-Duty Vehicle Greenhouse Gas Emission Standards and Corporate Average Fuel Economy Standards (420r12901-3). This docu....
Technical Paper
2017-03-28
Author(s): Vasanth, B., Arunachalam, M., Narayana, S., Sathish Kumar, S. et al.
In current scenario, there is an increasing need to have faster product development and achieve the optimum design quickly. In an automobile air conditioning system, the main function of HVAC....
Technical Paper
2017-03-28
Author(s): Lambert, S., Jamo, W., and Kurtz, M.
Abstract The failure of an A/C system often results in the introduction of contaminants to the A/C system. The sources of the contaminants include debris from damaged components and debris from the su....
Technical Paper
2017-03-28
Author(s): Pandit, N.
Abstract The effects of substituting a 12 mm thick subcool on top condenser in place of a 16 mm subcool on bottom condenser are evaluated in a vehicle level AC pull down test. The A to B testing shows....
Journal Article
2017-03-28
Author(s): Zhu, J. and Elbel, S.
Abstract Expansion work recovery by two-phase ejector is known to be beneficial to vapor compression cycle performance. However, one of the biggest challenges with ejector vapor compression cycle is t....
Technical Paper
2017-03-28
Author(s): Muthusamy, V., Sathish Kumar, S., and Sambandan, S.
Abstract In an automotive air-conditioning (AC) system, upfront prediction of the cabin cool down rate in the initial design stage will help in reducing the overall product development (PD) time. Vehi....
Technical Paper
2017-03-28
Author(s): Mathur, G.
The author has developed a model that can be used to predict build-up of cabin carbon dioxide levels for automobiles based on many variables. There are a number of parameters including number....
Technical Paper
2017-03-28
Author(s): Li, J., Feng, L., and Hrnjak, P.
Abstract This paper presents the results of an experimental study to determine the effect of vapor-liquid refrigerant separation in a microchannel condenser of a MAC system. R134a is used as the worki....
Technical Paper
2017-03-28
Author(s): Wang, D., Liu, C., and Chen, J.
Abstract This study investigates the cycle performance and potential advantages of the replacement of fin-and-tube evaporator with parallel flow micro-channel evaporator, in R134a roof-top bus air con....
Technical Paper
2017-03-28
Author(s): Miura, S. and YASUDA, T.
Abstract In general, CFD analysis with porous media is precise enough to simulate airflow behavior in a heat exchanger core, placed in the vehicle. In a case when the airflow behavior is complex, howe....
Viewing 1 to 23 of 23