Experiences from operation of different expansion devices for application in domestic micro CHP

• Autorzy: Mikielewicz D. , Mikielewicz J. , Wajs J.
• Języki publikacji: EN

Abstrakty

EN

In the paper presented are experiences from operation of three different expansion devices for possible implementation in the domestic micro CHP. These were the modified scroll expander and two designs based on the variable working chamber volume pneumatic devices. Experiments showed the superiority of both "pneumatic devices" over the scroll expander, indicating the possible internal efficiencies in the range of 61 82Such efficiencies are very attractive, especially at the higher end of that range. The volume of these devices is much smaller than the scroll expander which makes it again more suitable for a domestic micro CHP. Small rotational velocities enable to conclude that connection to electricity grid will also be simpler in the case of "pneumatic devices". The "pneumatic devices" under scrutiny here could be an alternative to the typical vapour turbine in the ORC cycle, which is in the process of development at the IFFM.

Słowa kluczowe

EN

central heating; expansion devices; micro CHP

PL

micro CHP; ogrzewanie centralne; rozbudowa urządzeń

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2010
• Tom: Vol. 31, no. 4
• Strony: 3--13
• Opis fizyczny: Bibliogr. 4 poz.,Rys., tab., wz.,

Twórcy

autor

Mikielewicz D.

autor

Mikielewicz J.

autor

Wajs J.

• Gdańsk University of Technology, Faculty of Mechanical Engineering, Institute of Power Engineering and Turbomachinery, Narutowicza 11/12, 80-952 Gdańsk,

Bibliografia

• [1] MIKIELEWICZ D., MIKIELEWICZ J.: Cogenerative micro power plants - a new direction for development of power engineering? Archives of Thermodynamics 29(2008), 4, 109-132.
• [2] MIKIELEWICZ J., MIKIELEWICZ D.: Comparative study of selected fluids for use in supercritical Organic Rankine Cycles. Archives of Thermodynamics 30(2009), 2, 3-14.
• [3] MIKIELEWICZ D., MIKIELEWICZ J.: A new criterion for selection of working fluid for subcritical and supercritical micro CHP. Applied Thermal Engineering, 30(2010), 2357-2362.
• [4] Refprop v. 8.0. National Institute of Standards, 2007.