Which of the following is the correct expression for finding out the quantity of cooling water required in surface condensers?

• A. mw=\(\frac{m_s\{xh_{fg}+c_{pw}(t_s-t_c)\}}{(t_{w2}-t_{w1})}\)
• B. mw=\(\frac{m_s\{xh_{fg}+c_{pw}(t_s-t_c)\}}{c_{pw}(t_{w1}-t_{w2})}\) c) mw=\(\frac{m_s\{xh_{fg}+c_{pw}(t_s-t_c)\}}{c_{pw}(t_{w2}-t_{w1})}\) d) mw=\(\frac{m_s\{h_{fg}+c_{pw}(t_s-t_
• C. \}}{(t_{w2}-t_{w1})}\) b) mw=\(\frac{m_s\{xh_{fg}+c_{pw}(t_s-t_c)\}}{c_{pw}(t_{w1}-t_{w2})}\) c) mw=\(\frac{m_s\{xh_{fg}+c_{pw}(t_s-t_c)\}}{c_{pw}(t_{w2}-t_{w1})}\)
• D. mw=\(\frac{m_s\{h_{fg}+c_{pw}(t_s-t_c)\}}{c_{pw}(t_{w2}-t_{w1})}\)