Renewable energy resources in South Asian countries: Challenges,policy and recommendations

In South Asia, a number of developing countries like India, Pakistan, Sri Lanka, Bhutan, Nepal, Afghanistan and Maldives are looking into inexhaustible and repeatable alternative energy sources such as solar, wind, hydro and biomass. Geographically, South Asian countries are located in a region of different climatic conditions such as tropical, humid etc. which provides easy access to a variety of renewable energy sources. The governments of South Asian countries have initiated renewable energy policies to encourage industries and individuals to employ renewable energy powered systems in power applications. This article provides an updated and comprehensive overview of the renewable energy status in the South Asian countries, and it includes an assessment of the region's renewable potential, current installed renewable energy capacity. This paper gives a brief description about energy scenario, renewable energy potential and challenges in South Asian countries. The study also provides the renewable energy policies and recommendation in South Asian countries

Solar PV and BIPV system: Barrier, challenges and policy recommendation in India

India receives sun's energy over 300 days a year most of the time. About 5000 trillion kWh per year sun's energy is incident over India's land area. Theoretically, a small fraction of total incident solar energy can meet the entire country's power requirements. There are many government schemes to promote solar power generation. The government of India initiated solar PV/BIPV policies to encourage industries and individuals to use solar energy powered systems for electricity generations. This article provides an overview of the solar energy status and application of BIPV system in India. It includes an assessment of the region's solar energy potential and solar PV/BIPV installed capacity. This paper gives a brief description barriers and challenges facing solar BIPV development in India. This study also provides the solar PV/BIPV policies and recommendations with reference to the Indian context

Congenital extrahepatic portosystemic shunts (Abernethy malformation): An international observational study

Congenital extrahepatic portosystemic shunt (CEPS) or Abernethy malformation is a rare condition in which splanchnic venous blood bypasses the liver draining directly into systemic circulation through a congenital shunt. Patients may develop hepatic encephalopathy (HE), pulmonary hypertension (PaHT), or liver tumors, among other complications. However, the actual incidence of such complications is unknown, mainly because of the lack of a protocolized approach to these patients. This study characterizes the clinical manifestations and outcome of a large cohort of CEPS patients with the aim of proposing a guide for their management. This is an observational, multicenter, international study. Sixty-six patients were included; median age at the end of follow-up was 30 years. Nineteen patients (28%) presented HE. Ten-, 20-, and 30-year HE incidence rates were 13%, 24%, and 28%, respectively. No clinical factors predicted HE. Twenty-five patients had benign nodular lesions. Ten patients developed adenomas (median age, 18 years), and another 8 developed HCC (median age, 39 years). Of 10 patients with dyspnea, PaHT was diagnosed in 8 and hepatopulmonary syndrome in 2. Pulmonary complications were only screened for in 19 asymptomatic patients, and PaHT was identified in 2. Six patients underwent liver transplantation for hepatocellular carcinoma or adenoma. Shunt closure was performed in 15 patients with improvement/stability/cure of CEPS manifestations. Conclusion: CEPS patients may develop severe complications. Screening for asymptomatic complications and close surveillance is needed. Shunt closure should be considered both as a therapeutic and prophylactic approach

Experimental Exergy Analysis of Water-Cooled PV Module

The solar photovoltaic (PV) cell converts solar energy into electricity with a relatively low efficiency which is <15%. More than 80% of the absorbed solar energy is dumped into the surroundings as heat after photovoltaic conversion. The operating temperature of the photovolatic module should be maintained as low as possible to improve the efficiency. This research work proposes recycle water-cooled solar photovoltaic system design by using a mono-crystalline and amorphous silicon PV module as solar absorber. Recycle water cooling of a normal amorphous and crystalline PV module configured as water base solar PV system by forced flow is studied. The energy and exergy performance of the PV module has been experimentally determined at 3.5 l/min (210 l/h) mass flow rate. The experimental result shows that the water-cooled solar PV module has got better performance than the PV module without cooling. Around 4.5% of amorphous and 3.2% of mono-crystalline module energy efficiency improved on cooling along with 6.5% of amorphous and 5% of mono-crystalline module exergy efficiency improvement with respect to without cooling/normal solar PV module

Recent Advancement in BIPV Product Technologies: A Review

Application of building integrated photovoltaic (BIPV) technology in the building envelope gives an aesthetical and modern appearance. BIPV is a practical, innovative and promising technology for net zero emission buildings. This paper introduces the best in class of the BIPV products and their properties along with international guidelines and testing standards. BIPV products for rooftops, façades and windows have been highlighted in this paper. The properties of BIPV products incorporate solar PV efficiency, Voc, Isc, Pmax and fill factor (FF). The life cycle sustainable assessment of BIPV module has been reviewed by examining energy payback time and GHG emission

BIPV in Southeast Asian Countries – Opportunities and Challenges

In building integrated photovoltaic systems, PV elements are integral of the building which displace the use of conventional building materials. BIPV serves as the external lined covering and also acts as a support structure for the building. BIPV system has many benefits such as on-site generation of electricity, architectural elegance, reduced cost of the building construction and increased market acceptance of the buildings. PV professionals from several countries have been working from several years to improve the design for building application. This paper identifies the solar potential for BIPV application, function of BIPV, possible design and integration strategies with reference to Southeast countries. Finally, Barrier and challenges of implementing BIPV system have been examined

Effect of aerobic exercise interventions on body composition in obese females: A systematic review

Global enhancement in the prevalence of obesity was associated with modifiable lifestyle factors, including a lack of daily physical activity involvement. Therefore, the preventive as well as management strategies are required to treat obesity. The purpose of the study was to review the scientific evidences for the effect of an aerobic exercise programmes’ on body composition of obese female. For this purpose 307 research articles were reviewed from different data resources i.e. Research Gate, Pub Med, Google Scholar, Springer, Scopus, Web of Science and sample of 47 research articles were selected for the study by following the predefined inclusion criteria. Further, this study was given a direction that aerobic exercise interventions were significantly beneficial for body composition management. And, the findings of the study were concluded that low to high intensity structured daily physical exercise regime practices significantly improves body weight, waist to hip ratio, body mass index, fat percentage, fat mass, lipid profile, lean body mass and body composition in obese females

Simulation and performance analysis of 110 kWp grid-connected photovoltaic system for residential building in India: A comparative analysis of various PV technology

System simulation is necessary to investigate the feasibility of Solar PV system at a given location. This study is done to evaluate the feasibility of grid connected rooftop solar photovoltaic system for a residential Hostel building at MANIT, Bhopal, India (Latitude: 23° 16′ N, Longitude: 77° 36′ E). The study focuses on the use of Solargis PV Planner software as a tool to analyze the performance a 110 kWp solar photovoltaic rooftop plant and also compares the performances of different PV technologies based on simulated energy yield and performance ratio. Solargis proves to easy, fast, accurate and reliable software tool for the simulation of solar PV system

BIPV based sustainable building in South Asian countries

In building integrated photovoltaic (BIPV) systems, PV elements are integrated along with the building which often serves as the exterior weathering skin. PV researchers from various countries have been working for several years to optimize these systems. Sustainable BIPV system has many benefits such as the building itself becomes the PV support structure, and the BIPV components displace the conventional building materials and labor cost, thereby reducing the net installed cost of the PV system and building construction. It also provides on-site generation of electricity and architectural elegance, which increases the market acceptance of the buildings. The BIPV systems can be interfaced with the available utility grid or used as off-grid systems. This paper identifies sustainable building concept in South Asian countries and role of BIPV applications in sustainable building. This article gives review of BIPV applications in South Asian countries. Finally, Barrier and challenges of BIPV system have been discussed and future direction is highlighted