Setu Sinha

Development of parameter based fault detection and diagnosis technique for energy efficient building management system

This paper presents a complete methodology for detection and diagnosis of faults in variable air volume air handling units. Three cases are considered: (a) an off-line fault detection technique for existing buildings, (b) an automatic on-line fault detection technique for integration in building management systems (BMSs) of upcoming not very complex buildings and (c) an automatic on-line fault detection as well as diagnosis technique for BMSs of upcoming complex automated buildings. The method is based upon the auto regressive exogenous model and recursive parameter estimation algorithm. The proposed model and methodology have been trained by using several days of normal real time operational data and validated on data obtained by introducing faults artificially under normal operating conditions. It is concluded that the method is robust and can detect faults in dampers, sensors and PID control.

Carbon Stock, Afforestation and Acidic Deposition: An Analysis of Inter-Relation with Reference to Arid Areas

Recent advances in desert afforestation underlines its viability and importance in combating global warming and acidification. In this paper, the inter-relation between afforestation, global warming and acid rain has been analyzed. Numerical simulations indicate that afforestation of deserts has distinct advantage as carbon sink and as an important factor for changing microclimate of the region rather than a source of energy. Acidic deposition may well be utilised as fertiliser in nutrient deficit soil of tropical arid areas. However, past trends and projections of acidic deposition in arid areas adjacent to Thar deserts indicate an early efforts are required to cap the opportunity. Delays may contribute towards more incidences of failures.

Application of system identification modelling to solar hybrid systems for predicting radiation, temperature and load

Uncertainties in local solar radiation, ambient temperature and thermal load data have been one of the major factors limiting the reliability and efficiency of solar thermal hybrid systems. In the present paper, moving average auto regressive exogenous (ARX) model based reasoning has been mooted and modified to include moving average method, as an effective tool for predictions of these data. The results show that the method is quite robust and is capable of predicting fairly accurate results, which would make these systems more viable in areas where meteorological data are not available or vague.

Solar desalination of saline soil for afforestation in arid areas: numerical and experimental investigation.

Abstract Afforestation in deserts and arid lands has immense potential for global carbon balance and climate change. The key to desert afforestation is efficient use of scarce water resources and requires innovative, and cost effective, as well as maintenance free technologies for desalination. In this paper, one such methodology is presented. A state of the art solar distillation system is constructed using waste material, which works as an “evaporation accelerator,” to remove salt from the root zone. The process is optimized with reference to a host of species, conventionally thought to be suitable for deserts and arid areas. The process is numerically simulated and experimentally tested under similar environments of Western Australia. The results obtained from one dimensional and two dimensional column experiments to determine the salt and water movement under desert like conditions clearly indicate that the objective of salt leaching in two weeks can be met cost effectively for a plantation without any outside supply of energy sources. After two weeks, proper drip irrigation would be sufficient to maintain the soil moisture for the survival of the plant.

A study on the immunisation status and the factors responsible for incomplete immunization amongst children of age group 0-12 months coming to a tertiary care hospital (IGIMS)

The health of children has been of vital importance to all societies because children are the basic resources of future mankind. Immunization is one of the best indicators to evaluate the health outcomes and services distributed across social and economic groups. It is also one of the most cost-effective interventions to prevent a series of major illnesses, particularly in environments where children are undernourished and die from preventable diseases. Vaccines ensure that all children, no matter their circumstances, have a shot at a healthy life children in India continue to lose their lives to vaccine-preventable diseases such as measles, which remains the bigger killer. Tetanus in newborn also remains a problem. Diarrhea remains the second major cause of death among children, after respiratory-tract infections. Unhygienic practices and unsafe drinking water are some of its main causes. Immunization saves more than 3 million lives worldwide each year, and it saves millions more from suffering illness and lifelong disability (WHO estimate, 2009). ABSTRACT

Study on consumption of fast food among medical students of IGIMS, Patna

Fast food is a food that is prepared and served quickly at outlets called fast food outlets. It includes chips, sandwiches, burgers, fried chicken, French fries, chicken nuggets, pizza, ice-cream etc. 1 It is high in calorie and lacks in micronutrients. It has been proved that its intake leads to many diseases and disorders like obesity which is likely to cause cardiovascular diseases later on. According to WHO (2003), frequent fast food consumption is also a health concern because most fast foods are rich in saturated fats, trans fats, simple carbohydrates and sodium-all of which are nutrients associated with hypertension cardiovascular diseases, and type 2 diabetes. 2 For those who eat a meal or a snack in a fast food restaurant once a week or so, the effect on the nutritive adequacy of the diet is not that great. But for those who might eat a meal daily at these places the nutritive contributions must be carefully considered. ABSTRACT