Zbyszko Kazimierski

Early EHVE with Two Small Heaters and Additional Devices to Improve Heat Exchange

The heat delivered to the EHVE should be sufficiently intensive when valves 1 and 3 are closed. The isochoric process, which takes place then in the early EHVE, yields rather poor heat exchange, which was confirmed during the experimental investigations Brzeski and Kazimierski Proc Inst Mech Eng A J Power Energy 215(4):486–494 (2001) [1].

Early Design of the EHVE – Calculation Method and Thermodynamic Cycle

The EHVE operation has been explained in the Introduction, whereas the first publications devoted to this idea are Brzeski, Kazimierski, SAE Technical Papers Series Paper 950092. International Congress and Exposition, 1995, [1 ] and Brzeski, Kazimierski, Comput Assist Methods Eng Sci 2(2):129–139 1995,[2].

Further Development of the EHVE – a 4-Stroke Engine

Now, we will discuss the next improved version of the EHVE—a 4-stroke engine and the alternations introduced to eliminate the so-called “hot cylinder” of the expander being a part of the 2-stroke engine model.

EHVE versus Stirling Engines – a Comparison

In this chapter, the version of the 2-stroke EHVE having two blowers applied in internal heat exchanger loops, described in detail in Chap. 5, is investigated and quantitative results of its performance are compared to chosen examples of Stirling engines.

Experimental Investigations of the EHVE

As already mentioned in the Introduction, the experiment was carried out on a modified variant of the early version of the EHVE. Instead of a single, compact cylinder as the one depicted in Fig. 2.1, two parallel cylinders were applied.

Newly Developed 2-Stroke EHVE

Although this chapter is also devoted to a 2-stroke type of the EHVE, the major difference between it and the previous version refers to a size of heat exchangers which introduce an essential change in heat delivery.

Separate Settling Chambers in the Improved 2-Stroke EHVE

Air-powered heat engines like the EHVE, which works in a modified Joule cycle, are still subject to continuous development, both theoretical as shown in Lontsi et al. Energy 63:309–316, 2013, [1 ] or practical, for example Xu et al. Energy 68:877–885, 2014, [2 ] .