water usage calculator worksheet

3 showers 20 x 3 = 60 1 shave 2 x 1 = 2 1 shampoo 4 x 1 = 4 1 hand dishwashing 4 x 1 = 4 Peak Hour Demand = 70 Worksheet for Estimating Peak Hour Demand/First Hour Rating Example The first hour rating is the number of gallons of hot water the heater can supply per hour (starting with a tank full of hot water). After calculating your water use patterns, you can begin conserving in ways that work best with your lifestyle. Storage and heat pump (with tank) water heaters. 0000025336 00000 n ��;� yu��E�%�3�[�UK>��Sq��F��0��L�9��ňE�#��"u��5Z�`��p��/dvePz�>��9q��출��(f��bF�W��(��-1r��W�ԫbF�U9�yi��W�Bu��Y�e��a�w+<7��9Z�B>��B>��Ӕ��'t�|^�"� ].��g��&Fq��pń�o��}� �� The Calculator has been developed in accordance with the Government's National Calculation Methodology for assessing water efficiency in new dwellings The Water Calculator compares your water use to a similar average and efficient house in your region. A medium (80-gallon) storage tank works well for three to four people. h�b``�g``�a```�db@�@�� f��3000�1�g�g�iF_&Y�a��2�SIeX�hm�ʰ�q��W�Ō�l�T�AMdd`��w6�6f�w`Y�� . Then talk with the other members of your household about the ways everyone can make water conservation a daily habit. 242 35 endstream endobj 275 0 obj <>/Filter/FlateDecode/Index[7 235]/Length 31/Size 242/Type/XRef/W[1 1 1]>>stream In that case, you'll need a temperature rise of 90ºF (50ºC). Use the worksheet below to estimate your maximum usage of hot water during this one hour of the day—this is your peak hour demand. <<240FF91C1A60434B9A8794B27CF776CE>]/Prev 115314/XRefStm 1232>> Faster flow rates or cooler inlet temperatures can sometimes reduce the water temperature at the most distant faucet. 0000004385 00000 n To determine temperature rise, subtract the incoming water temperature from the desired output temperature. Therefore, this household would need a water heater model with a first hour rating of 34 to 38 gallons. Contractors usually follow a guideline of around 20 square feet (2 square meters) of collector area for each of the first two family members. Adapted from information from the Federal Energy Management Program Energy Cost Calculator. 0000049938 00000 n Determine what time of day (morning, noon, evening) you use the most hot water in your home. It depends on the tank capacity, source of heat (burner or element), and the size of the burner or element. 0000007926 00000 n If you haven't yet considered what type of water heater might be best for your home, learn more about selecting a new water heater. For most uses, you'll want your water heated to 120ºF (49ºC). 0000025763 00000 n For every additional person, add 8 square feet (0.7 square meters) if you live in the U.S. Sun Belt area or 12–14 square feet if you live in the northern United States. 0000015628 00000 n 1.6 res.) !AH��C��ҒPn�K?�c'6Y�P�(Y��9g�\67l�{�� L�\��lp��d 0000002745 00000 n Product literature from a manufacturer may also provide the first hour rating. 0000004730 00000 n Water Calculator: Required Data Entry Number Of People In Residence Indoor Water Use Bathroom Water Use Daily Showers In The Residence Average Shower Time In Minutes Shower Head Flow Rate (3.8 std. The worksheet example shows a total peak hour demand of 36 gallons. Note: the worksheet does not estimate total daily hot water usage. endstream endobj 281 0 obj<>stream Office of Energy Efficiency & Renewable EnergyForrestal Building1000 Independence Avenue, SWWashington, DC 20585, Is your water heater the right size for you house? First, list the number of hot water devices you expect to use at any one time. *The above worksheet assumes no water conservation measures. The EnergyGuide label lists the first hour rating in the top left corner as "Capacity (first hour rating)." 242 0 obj <> endobj !şØ†’Œ”f0¡& Æ—ù÷÷[Ó|HQ³”Õú�AÑO\ú¢9¡NÎê8?¥N¦b§mRvmz'Á†‚ÔUcá5íô b¹Wø¦dFø ª? 0000006257 00000 n For dishwashers without internal heaters and other such applications, you might want your water heated at 140ºF (60ºC). A properly sized water heater will meet your household's hot water needs while operating more efficiently. The worksheet example shows a total peak hour demand of 36 gallons. 0000001413 00000 n Here you'll find information about how to size these systems: For sizing combination water and space heating systems -- including some heat pump systems, and tankless coil and indirect water heaters -- consult a qualified contractor. 0 trailer Note: the worksheet does not estimate total daily hot water usage. 0000003308 00000 n .��" ��Ȣ� 0000004044 00000 n If we each save a small amount of water each day, our combined savings will add up to millions of gallons each year. 1.6 res.) This helps prevent the system from overheating when the demand for hot water is low. use water wisely and protect water supplies whenever and wherever possible. H��A�0�"/@$��Q� ��)�ʢ֪D��ԑW�ݰ}��:�>��9}��ҋ��O��ݳ{t+B��"��4�E��!\��q2�G�ŋ̆�H��i��X1�^Uo�ڶ,�}��J!��[��A%��Q�f�0�j�4��Ʈ�o��[�oj�o厶o,�0�t�h2�7d�o4��ob�o��;ھ�xT�۾��l�i��H��lϹ��o��+� S�� endstream endobj 243 0 obj <>/Metadata 5 0 R/Pages 4 0 R/StructTreeRoot 7 0 R/Type/Catalog/ViewerPreferences<>>> endobj 244 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/StructParents 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 245 0 obj <> endobj 246 0 obj <> endobj 247 0 obj <> endobj 248 0 obj <>stream H��T�N1}�Ẉ-u_ƻ� The Water Calculator provides a working example of the calculator used for Part G of the Building Regulations and the Code for Sustainable Homes.The Water Calculator uses the method set out in the “Water Efficiency Calculator for New Dwellings”. Calculate the average gallons consumed in one day: - You will probably have to convert your measurements from cubic feet (what most 0000001557 00000 n Then, add up their flow rates (gallons per minute). #TÀSÇS~¨¿úw3WÈ7M²²şç¿ÁªgpZf§ÆùH" 0000015278 00000 n Typically, a 70ºF (39ºC) water temperature rise is possible at a flow rate of 5 gallons per minute through gas-fired demand water heaters and 2 gallons per minute through electric ones. Eè‰(#~‚F:�R£üÖüöL{ğa£Ø,LíŞ90#we0cN¢RÒ[ÂÿJ õ©À 0000008265 00000 n To properly size a storage water heater for your home -- including a heat pump water heater with a tank -- use the water heater's first hour rating. H‰”TMo›@½ó+æ¸Ha½_° E‘'‡TªT)Üª6°N¨X|$M}gClËN•ƒE°óŞ›yo‚ÕO¸¼\ıXßİ puu}³†à:VyÎ€C¾ äàßpF³�lwâ‰ Œ1*‹©,�ü% æ¿ƒÛˆ¥î] Some types of tankless water heaters are thermostatically controlled; they can vary their output temperature according to the water flow rate and inlet temperature. 0000006828 00000 n 0000015001 00000 n Visit the solar water heaters page for more on these calculations. 0000007273 00000 n Use the worksheet below to estimate your maximum usage of hot water during this one hour of the day—this is your peak hour demand. A large tank is appropriate for four to six people. %PDF-1.4 %�� 0000039562 00000 n 0000008040 00000 n H��n�0E�� 0000001015 00000 n "NyŒ)Q¦y5Umk¦ã$5N˜ª¤Gıß#�|Õ¦“{$¨XS¥œ˜ÏlªÏÛ4Ylš~¤Õ©ë€¦šmúîÛ(Ú¦¯JÛAaêbÄÑUÍh8Û•›®«ñs¶%¼Í£�awO £Zs§Úu³ó¥Ç0ÒXB’íPµ�³ø£é±�ÈÓˆØÎS=. xref 2. It helps to find the water consumed by a country, community, group of consumers or even the individuals. A small (50- to 60-gallon) storage tank is usually sufficient for one to two three people. Just select the inputs from the drop-down menu of water usage calculator … Tankless or demand-type water heaters are rated by the maximum temperature rise possible at a given flow rate. First, use this simple calculator to find your average annual water use and learn ways to save. Solar system contractors use worksheets and computer programs to help determine system requirements and collector sizing. For active systems, the size of the solar storage tank increases with the size of the collector -- typically 1.5 gallons per square foot of collector. Unless you know otherwise, assume that the incoming water temperature is 50ºF (10ºC). ��h��%A��#��1�:��R+YC�ֲA݄}ៅ5|Kؖw�#��PhͷDˇ�fO��o�[6��? Gather the bills or meter readings for a 12-month period (or as close as possible). Therefore, before purchasing a water heater, make sure it's the correct size. endstream endobj 250 0 obj <>stream Water Calc. 0000008152 00000 n 0000005145 00000 n *The above worksheet is based on standard usage with no water conservation measures. | Photo credit ENERGY STAR®, Fuel Efficient & Alternative Fuel Vehicles, Hand dishwashing or food prep (2 gallons per minute). This simple home water check-up will help you track your household consumption, both indoors and outdoors. Therefore, to size a demand water heater, you need to determine the flow rate and the temperature rise you'll need for its application (whole house or a remote application, such as just a bathroom) in your home. 0000040090 00000 n Students get information about how water is used in agriculture, energy production and all the household goods we use in our lives. 276 0 obj <>stream 0000049663 00000 n h�bbbd`b``Ń3� �� Look for water heater models with a first hour rating that matches within 1 or 2 gallons of your peak hour demand -- the daily peak 1-hour hot water demand for your home. 0000089545 00000 n 0000025057 00000 n To reduce flow rates, install low-flow water fixtures. ��Ҷ'�3��4��p.�B,��+�� x%*j�PT��k:�,?#�%�ߋʇ�KQ��)}/��W�'��Ӎ�'3��Ap"�(��wN$=S The flow rate through the demand water heater would need to be at least 3.25 gallons (12.3 liters) per minute. 0000001232 00000 n Baseline Water Consumption Worksheet If you have your utility bill or regular water meter readings for your facility 1. Worksheet Name of Project INFORMATION REQUIRED TO SIZE WATER SERVICE AND WATER DISTRIBUTION: 1- Demand of building in water supply fixture units (WSFU); 1.a. 0000052021 00000 n endstream endobj 251 0 obj <> endobj 252 0 obj <>stream 0000050357 00000 n 0000000016 00000 n 0000002330 00000 n *T'L; _DR£D*²î¬,>ÄÄ@¿íl)bÊşÙÚ†ÊªßÖæLSâÏÔïa”’¿x! Total Weekly Baths In Residence Toilet Water Use Average Number Of Flushes Daily Per Person Gallons Per Flush (5 std. �0�vb[�7��ҒCY�P4؀9s��s��@S� �2M eJ'Z+��!�� QP��5��;��߬�� "�ż�l��! »”ä” ìƒ§ÄÕBüïXèCŞªŞOß_ËeánG2A Water Use Calculator Understanding where and how much water we use is the first step in beginning to conserve. endstream endobj 249 0 obj <>stream startxref 0000002011 00000 n The world is facing an ever deepening water crisis.Understanding where and how much water we use is the first step in beginning to conserve one of our most precious resources.This simple calculator will help you to track your water consumption, both indoors and outdoors and give you the information you need to help you save water. Additional calculations involved in sizing your solar water heating system include evaluating your building site's solar resource and determining the proper orientation and tilt of the solar collector. %%EOF [��4��?��w��P�8�w��L��U��9Wg�w��x7=�S�*��-��7�C�� D�e�>�_=> ��v��]�Cv�Mg��|K/.f��ohF//�n�)�2u��y%��m��y�М�/MHB`-f6$�U�y!��[`WG��o1��o��z]n+�6?��Q�.