tailieunhanh - solar collectors and panels theory and applications Part 16

Tham khảo tài liệu 'solar collectors and panels theory and applications part 16', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Working Fluid Selection for Low Temperature Solar Thermal Power Generation with Two-stage Collectors and Heat Storage Units 441 Irradiation W m2 Organic fluid R123 R113 R245fa pentane butane opt. y 650 max. xf o max. nc opt. y 750 max. xf o max. nc opt. y 850 max. xf o max. nc Table 5. Performance analysis of working fluids on the two-stage collectors On condition of irradiation of 750 W m2 the maximum heat collection efficiency for R123 R113 R245fa pentane or butane is about or respectively. And the relative increment of heat collection efficiency is or respectively as compared with that of single-stage collectors table 4 . 6. Conclusion Heat transfer irreversibility between conduction oil and organic fluids will be large if singlestage collectors are adopted. The low temperature solar thermal electric generation with two-stage collectors and heat storage units gives a flexible system which can react to different operation conditions. Besides this kind of system displays superior heat collection efficiency as well as cost-effectiveness. The regenerator can significantly warm working fluids and complement the heat supplied from outside. On the condition of evaporation temperature 120 C environment temperature 20 C and irradiation 750 W m2 the ORC efficiency for R123 R113 R245fa pentane or butane is or respectively. Although R113 and pentane have the best ORC performance the highest collector efficiency is obtained on the use of R245fa and butane. And the heat collection efficiency is or respectively. The proportion of FPC area to the total collector area plays an important role in both the overall heat

TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.