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Problem $04\mathrm{.}052-$ Flow Ratios of Two Streams in a Counterflow Heat Exchanger

Saturated steam at $1$ atm and $100C$ is continuously generated from liquid water at $1$ atm and

$25C$ by thermal contact with hot air in a counterflow heat exchanger. The air flows steadily at

$1$ atm. Determine values for $m^{}($steam$)/n^{}($air$)$ for the following cases.

Problem $04\mathrm{.}052.$a $-$ Flow Ratios of Two Streams in a Counterflow Heat Exchanger $($Air

Inlet at $1000$C$)$

Consider that air enters the exchanger at $1000C$ and exits at $35C.$

The value for $m^{}($steam$)\frac{?}{n^{}}($air$)$ is $0\mathrm{.}4295.$