A refrigerant mixture TJR02 was developed and the comparison experiment was performed on a singlestage vapor compression refrigeration system originally designed for R22.Experimental results show that TJR02 can be dir...A refrigerant mixture TJR02 was developed and the comparison experiment was performed on a singlestage vapor compression refrigeration system originally designed for R22.Experimental results show that TJR02 can be directly used in the system without modifying the original system or changing lubricant.By replacing R22 with TJR02,cooling rate gets faster and at least 20% of energy is saved.The actual detection in the standard test-bed verifies the experimental results and indicates that the adoption of TJR02 leads to greater efficiency and wider application.And the lower the refrigeratory temperature is,the more obvious the energy saving effects will be.展开更多
Depending on the source, a reader may be left with the impression that Family Businesses （FBs） typically account for between 75% and 95% of all enterprises operating in an economy. This study, using official structu...Depending on the source, a reader may be left with the impression that Family Businesses （FBs） typically account for between 75% and 95% of all enterprises operating in an economy. This study, using official structural business statistics from Ireland, suggests that in fact family businesses may account for a considerably smaller share of the business economy, something closer to 46%. This paper attempts to explain how such a discrepancy can arise. Using the Annual Services Inquiry compiled by the Central Statistics Office （CSO） as the anchor dataset, micro data are linked to the e-Commerce and ICT survey, Community Innovation Survey and VAT registrations datasets in order to determine whether labour productivity in Family Businesses （FBs） is significantly different to that of Non-Family Businesses （NFBs） and if Information and Communication Technologies （ICT） or innovation has an impact. The paper also highlights the significant impact that Foreign Direct Investment （FDI） makes to the Irish economy. This analysis is particularly relevant for a small open economy like Ireland where 31% of traded services GVA and 15% of employment is generated by multinational enterprises.展开更多
基金Supported by the Key Technology R&D Program of Tianjin,China(No.11ZCKFGX21100)Tianjin New Coastal District "Ten Campaign" Major Science and Technology Project(No.2010-BK140009 and 2010-BK140002)+1 种基金National Basic Research Program of China("973" Program,No.2009CB219900)the Program for Changjiang Scholars and Innovative Research Team in University(No.IRT0936)
文摘A refrigerant mixture TJR02 was developed and the comparison experiment was performed on a singlestage vapor compression refrigeration system originally designed for R22.Experimental results show that TJR02 can be directly used in the system without modifying the original system or changing lubricant.By replacing R22 with TJR02,cooling rate gets faster and at least 20% of energy is saved.The actual detection in the standard test-bed verifies the experimental results and indicates that the adoption of TJR02 leads to greater efficiency and wider application.And the lower the refrigeratory temperature is,the more obvious the energy saving effects will be.
文摘Depending on the source, a reader may be left with the impression that Family Businesses （FBs） typically account for between 75% and 95% of all enterprises operating in an economy. This study, using official structural business statistics from Ireland, suggests that in fact family businesses may account for a considerably smaller share of the business economy, something closer to 46%. This paper attempts to explain how such a discrepancy can arise. Using the Annual Services Inquiry compiled by the Central Statistics Office （CSO） as the anchor dataset, micro data are linked to the e-Commerce and ICT survey, Community Innovation Survey and VAT registrations datasets in order to determine whether labour productivity in Family Businesses （FBs） is significantly different to that of Non-Family Businesses （NFBs） and if Information and Communication Technologies （ICT） or innovation has an impact. The paper also highlights the significant impact that Foreign Direct Investment （FDI） makes to the Irish economy. This analysis is particularly relevant for a small open economy like Ireland where 31% of traded services GVA and 15% of employment is generated by multinational enterprises.
