Assessment of Environmental Impact for Air-Conditioning Systems in Japan Using HFC Based Refrigerants

Solid Waste Management activities have a direct impact on GHG emissions arising from waste. Aim of this study is to calculate emissions from current municipal solid waste management in Kosovo and propose different scenarios for mitigation of GHG emissions from waste management. The IPCC model and SWM-GHG Calculator were used for the calculation of GHG emissions from different waste management options. The most favorable mitigation scenario was the Scenario 3, which considered an advanced solid waste management system. Having in the consideration the current situation, needs for the future, technical infrastructure and financial cost, the most realistic scenario for Kosovo was improved recycling and disposal of waste to sanitary landfill. The assessment presented in this paper is based on data for the year 2016.

Section: Ghg Emissions and Cost For All Scenariosmentioning

confidence: 99%

Kosovo Scenario for Mitigation of Greenhouse Gas Emissions from Municipal Waste Management

Berisha¹,

Osmanaj²

2021

“…In recent years, technology has evolved rapidly due to demanding human needs. Technology developments in the current era of ageing world requires careful attention on the environmental impact of the technology 1,2,3) . This involves the effort to reduce greenhouse effects 4) , utilizing wasted heat from the currently available technology 5) , changing the working mechanism and working fluids so that pollution can be reduced 6,7) , and improving system's performances to avoid too many losses to environment 8) .…”

Section: Introductionmentioning

confidence: 99%

Temperature and Velocity Changes Across Tube Banks in One-directional and Bi-directional Flow Conditions

Hasbullah¹,

Saat²,

Anuar³

et al. 2021

The back-and-forth movement of flow in oscillatory flow condition that can be found in blood flow, thermoacoustic energy system and ocean wave can be categorized as bi-directional flow condition and heat transfer in this flow condition is not well understood. This paper reports an experimental investigation that compares temperature and velocity values between the onedirectional (the usual flow condition) and the bi-directional flow conditions. The experiment was done using thermoacoustic's standing wave rig with two different drivers to drive the one-directional flow and bi-directional flow conditions in the test rig. Results, that were recorded using piezoresistive pressure sensor, type-K thermocouple and hotwire anemometer, indicate that care should be exercised when calculating heat transfer in bi-directional flow conditions as the temperature and velocity changes are different compared to the one-directional flow condition. Differences were recorded to be within the range of 77% for temperature and 59.5% for velocity, presumably due to the different behavior of forced and natural convection effect as flow conditions changed.

“…Over the centuries, carbon dioxide (CO2) is known as the main contributor to greenhouse gas, in which refrigerants is one of the causes of carbon emission 21) . As refrigerated vehicles or vehicles equipped with cooling systems are usually used to deliver food supplies, they have higher carbon footprints and emit other gasses that contribute to air pollution.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Transportation Disruptions on Cold Chain Sustainability

Zulkefly¹,

Hishamuddin²,

Rashid³

et al. 2021

Food and vaccine supply chains are a top priority in the cold chain sector as consumers are particularly concerned for the quality, safety, and environmental effects of these temperature sensitive products. Moreover, any disruptions to these supply chains will have adverse effects on the overall supply chain system and significantly increase the cost of recovery. Therefore, this study aimed to determine the optimum recovery cost for transportation disruptions in a cold chain system. A mathematical model was developed to analyse transportation disruption's effect, where the optimal recovery schedule consisting of production and shipment quantity decisions are determined by considering the economic and environmental impact. Particularly, the model quantifies the costs of carbon emissions from fuel consumption and the cooling system of the refrigerated truck. LINGO programming software was used to conduct a numerical analysis to determine the optimal recovery costs. Our findings indicate that truck load capacity was the main factor affecting total recovery costs as trucks carrying larger load capacities greatly reduced the frequency of shipment on a route thereby reducing the overall cost of carbon emissions.