using this data :$-$ Temprature $($C$)$

$26\mathrm{.}3$

$28\mathrm{.}9$

$30\mathrm{.}3$

$32$

$33\mathrm{.}4$

$34\mathrm{.}7$

$35\mathrm{.}8$

$37$

$38\mathrm{.}1$

$39\mathrm{.}2$

$40\mathrm{.}4$

$41\mathrm{.}5$

$42\mathrm{.}3$

$43\mathrm{.}4$

$45\mathrm{.}5$

$46\mathrm{.}7$

$47\mathrm{.}5$

$48\mathrm{.}4$

$49\mathrm{.}4$

$50\mathrm{.}4$

$51\mathrm{.}7$

$52\mathrm{.}7$

$53\mathrm{.}8$

$54\mathrm{.}9$

$56\mathrm{.}1$

$57\mathrm{.}1$

$58\mathrm{.}2$

$59\mathrm{.}1$

$60\mathrm{.}1$

$61\mathrm{.}2$

$62\mathrm{.}3$

$63\mathrm{.}1$

$64\mathrm{.}1$

$65\mathrm{.}1$ Time $($s$)$

$0$

$180$

$360$

$540$

$720$

$900$

$1080$

$1260$

$1440$

$1620$

$1800$

$1980$

$2160$

$2340$

$2520$

$2700$

$2880$

$3060$

$3240$

$3420$

$3600$

$3780$

$3960$

$4140$

$4320$

$4500$

$4680$

$4860$

$5040$

$5220$

$5400$

$5580$

$5700$

$5940$ get the efficiency for the vaccum tube by having the irradiance equall to $1000$ watt$/$m$^2$ and the inner circle diameter is $44$ mm and the outer circle diameter is $57\mathrm{.}3$ mm and the water inside tube is $2650$ ml and the height of tube is $1\mathrm{.}65$ m and the specific heat of water is $4\mathrm{.}81$ J$/$gC$.$