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Water systems are more common than air systems as they offer better heat exchanger performance.
Photovoltaics (PVs) are arrays of cells containing a solar photovoltaic material that converts solar radiation into direct current electricity.
Solar energy influences Earth’s climate and weather and sustains life.
Although solar energy only provides 0.15% of the world’s power, experts believe that sunlight has the potential to supply 5000 time as much energy as the world currently consumes.Human services professionals are those who facilitate and empower those in society who require assistance in meeting their basic human needs both emotionally, mentally, and physically.Human services professionals work with diverse cultures in many different settings to provide prevention, education, and resources for individuals, families, groups and communities.If the worker is qualified to provide counseling sessions, such as a marriage and family therapist, single members in addition to the family as a whole should receive services.Referrals should be given to the family if the worker cannot provide counsel (Martin, 2011).An active technology of solar space heating needs a collector to absorb and collect solar radiation.Subsequently fans or pumps are used to circulate the needed air or heat absorbing fluid (generally water).Coal, oil and gas formed hundreds of millions of years ago from decomposed plant matter. Some of the important applications of solar energy are summarized below:(i) Space cooling and heating through solar architecture,(ii) Potable water via distillation and disinfection,(iii) Solar cooking, The architecturial design of the buildings helps in their passive space heating using solar Energy.Following strategies are useful for passive space heating:(a) Provide large south-facing windows(b) Provide an entire wall of double-glazed windows.(c) Provide a heavy dark-coloured south facing wall behind a layer of glass, with room air circulating by convection between the wall and the glass.(d) Provide a flat roof covered by a pond of water.Children and families have various issues that must be addressed when they are Putting food on the table may become a difficult task putting the family at risk for hunger (Martin, 2011).Ways in which human services professionals can meet the needs of families and children are to actively listen to each individual’s perception of the problem and address each issue.