this study estimates the residential property prices in tehran using hedonic price functions and spatial econometrics. the newly employed method is extending the analysis to the neighbourhood level (361 sectors) using the city's planning and gis tools. the results show that the spatial econometric model has higher identification than the simple econometric model. the distance between the c...

The use of heat pump is a promising way energy conservation to improve the driving range electric vehicles. In this study, thermodynamic characteristics CO 2 –based blends in operation subcritical cycle are evaluated at different ambient temperatures considering two modes. Coefficient performance (COP) and volumetric heating capacity (VHC) used evaluate performance. Optimization comparison both...

The ability of zeotropic mixtures with a temperature glide to operate in liquid recirculation systems is investigated in this paper, and the preliminary results of an experimental comparison between the performance of R134a and of zeotropic mixture R32/Rl34a, (25/75 by mass) are presented. The perfonnance of Rl34a operating in dry expansion mode are also presented as baseline data. INTRODUCTION...

We use unique store-specific data for a major UK supermarket chain to estimate the impact of planning, which restricts both the size and location of stores, on store output. Using the quasi-natural experiment of the variation in planning policies between England and other UK countries and a difference-in-difference approach, we isolate the impact of Town Centre First (TCF) policies. We find tha...

Studies related to the effects of ambient temperature on performance an air conditioning unit have been carried out for decades. However, specific study concerning effect varied under constant relative humidity has not reported yet. This paper discusses operating conditions and conditioner with R32 nominal capacity 2.6 kW. The test was in a controlled psychrometric chamber 50% outdoor from 24 3...

This research establishes 5 mm three-dimensional (3-d) flow and heat transfer microfin tube theoretical models with three different geometric structures. Using these models, the thermal-hydraulic performances of supercritical CO2/R32 in tubes structures at various working conditions were investigated. The influences each factors (pressure, mass flow, structures) on performance evaluated respect...