Vol 92, No 11 (2003)

Principles of patent search carried out in the field of Stirling machines are considered. Countries and companies carrying out the most intensive work in this direction of technique since 1976 have been determined. The dynamics of taking out patents on Stirling machines on the whole and on certain directions of design improvement has been evaluated. According to the obtained results a forecast determining the promising directions of research in the field of Stirling machines up to 2010 year has been drawn up.

The problems of intensification of conditions for heat exchange in « liquid- to-air» refrigerating systems on the basis of heat dissipating elements with spiral-wire finning are considered. The analytical correlations for the calculation and optimization of such systems are presented. Based on the investigations a high efficiency air heat exchanger with the dissipated capacity up to 16 kW has been designed. The design of self-contained refrigeration system for powerful gas lasers as used in medical apparatuses for diagnostics of cancer diseases, in show-business and in a number of devices operated in mobile objects is described.

This article describes the technical solutions incorporated in the refrigeration system of the reconstructed part of the enterprise, namely the slaughter line at the Petelinskaya poultry farm.

Ammonia refrigeration plants (ARF) belong to the objects of high danger, which is connected with high toxicity of ammonia and explosiveness of ammonia-air mixture.
The control and timely detection of ammonia leaks is necessary to provide safe operation of ACU as well as to protect the health of the operating personnel.
SIGNAL-03A" device was developed taking into account "Rules of ammonia and refrigerating plants construction and security" (PB-09-220-98) and meets all the requirements.

On October 1, 2003, a general meeting of the Union of Refrigeration Industry Enterprises was held at the Department of Food Resources of the Government of Moscow, which was the initiator of its creation. The meeting was attended by members of the Board of Trustees: Minister of the Moscow Government, Head of the Department of Food Resources A.I. Baburin, Chairman of the State Duma Committee on Agrarian Issues G.V. Kulik, Deputy Head of the Department of Consumer Market and Services of Moscow A.M. Kochetkov, Deputy Head of Agroindustrial Complex and Food Ministry of Economic Development and Trade V.V. The invitees included A.V. Baranenko, President of the International Academy of Refrigeration and Rector of St. Petersburg University of Low Temperature Technologies. Among the invitees there were M. Mamikonyan, Chairman of the Board of the Russian Meat Union, Y. Alyoshin, Director of the State University VNII, Y. Abramyan, T. Burdzenidze, I. Gordeev, G. Movsisyan, O. Klimashkin, A. Lebedev and A. Ilyin, heads of the largest refrigerating plants. On behalf of the deputies of the Parliamentary Assembly of the Union of Belarus and Russia N.P. Masherova, First Deputy Chair of the Central Council of the Union Public Chamber, sent her greetings to the participants of the meeting.

The 24th International Specialized Exhibition "Refrigeration, Ventilation and Air Conditioning" (IKK-2003) was held on October 8-10, 2003 in Hannover, Germany.
As usual, it gathered guests and participants from all over the world. However, this year, many of the largest companies on the refrigeration equipment market were not represented at the exhibition, which, undoubtedly, shifted the emphasis in the evaluation of the exposition.

This year's IKK-2203 was, as usual, a pleasure to see a great variety of companies and companies from all over the world exhibiting serial products as well as the latest developments on their stands. Among the new products, we would like to mention the developments related to new types of refrigerants, particularly R723.