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_._�.:rL.LV�J�✓\.c�aL .7L'tvl�Cir_:l ►tr.�.►.�_...r�.. . .�. . � . . • <br /> , �� <br /> • � • �."'� � <br /> -- �^t�F <br /> t � \� <br /> ' �P�paa�'' hour(10 m) to stay ahead of <br /> p, Decera►in�p ��600�;1ons pez 8P <br /> 1. Minimum sugges <br /> 'N����tied for delivery bo a drop box of a home system i.s 2.700 - <br /> �t���p of pRssure in drop box. �o � ,� �••,G.c�,�,,. <br /> 2. Uo�s per hour t4s SP°~)tO ��tipn aystem. pips La►� � <br /> 8� <br /> 3. Ux�'u SE�pZJIViP�AQ1�— $P� pounc of Uiscl <br /> e heid zeqn��� F1ar�DiPE«srca � <br /> B.Determin betwetn P'�mp az''d F°int of dixhar8e- • <br /> 1. flevadon differe� _�_feet <br /> ��distrib�ution system►add flve feet for pcessur� F_i8b <br /> �, tf p�u�,p�g to a 20 inc!► 3.0 inet� <br /> �quired at a�anifcld �.�' .f� 13���ioo�dvro� <br /> t� <br /> 3. Friction loss �p��diameber.C�,�rje.�t- lp 0.69 �•� <br /> a. Enta friction loss table with gpm a F 18. ,G�� 12 0.96 038 <br /> �fciction loss in feet p+er 100 feet from p Se ' .14 1.28 O.e8. <br /> /',SS f�/100 ft of P1P� 16 1.63 <br /> s ��� 0.11 <br /> ' b. Determin�tota!pipe t�8�����fltting � � 3 73 1� ' 0.16 <br /> int. � <br /> Add 25 perc� �� E��ent pipe S o.23 <br /> lop ss,or vse a fittin8 � 7� 0.30 <br /> length-1?5 ti�us PiPe X��s �J feet � 14.?�3 � oS8 <br /> _"'�c''`"� muld 1 ' SO <br /> c. Calculate total friction loss b'Y p�g len h. . 4.76 0.82 <br /> Eriction loss in ft/100 ft by equival_1��P�t�� J, vL feet , 60 5.60 <br /> X .�Sr.��. <br /> Total Eriction loss= ��of devadon difference. i, � <br /> fq, Total hend zeq�� . <br /> ; special head require����and total friction loss. <br /> i /U +=_--+ �- `� <br /> � --- �� (3� � • � <br /> ; <br /> TOTAL IiEAD � �'� feet • <br /> D-7 <br /> C. Pump selection m (Step A)witt►at least �,M.� sew� �,�, �+au.o� �E <br /> �, to delivez at least �SP --- r,rs o. �cs�oc►�u`' <br /> f� 1. A pumP must be selected "',�� t n m <br /> �(�,�Eeet of tot�►t head(S�p B). . - � ,� � <br /> I I = � :�s <br /> � �°° . 3� xss <br /> � D. Total Puanpout Volume �for 4 to 5 pump oPaations pe�'day s � ,,,o �, <br /> �un life select sump / , �o��dose • �o o � �� ss: <br /> ` 1. To maximize��♦4' r � .�a <br /> s �� ' <br /> `.� 2. Calculate drainback 1� / � f�, a F-18) � F-18a <br /> t. Decermine total pipe � llons per 100 Eeet. (see p $� �� i� a�uons <br /> 2. Determine liquid volume oE pipe.l7�-� 1 4.4' <br /> 3. Multiply iength by volum�� D�11�%��f� sty�8�lons• <br /> (�_feet x��Sa u a n t i A la r gar dninback � �.25 7'7 <br /> �� 4 P 8 cosa are 1 <br /> •guggcsced drainback quanrity is 10 per�es�t of pum � <br /> m smtion e��aency slightly but um �n �� ``� <br /> percentage w i t l decressa P u P costs. 'Z <br /> usually a relatively smal1 part of the total househc�d e nergy 2� 24 <br /> uals dose volume+drainback'9- ,ra�l Gallons 3 3� <br /> 3. Total�ump out volua��-�o�_���_.– 4,, 6E <br /> ��allons per . <br />