reducing the amount of electricity consumption in water

Reducing the Amount of Electricity Consumption

In

Water Services Running Cost

Fulfilling 4 principal strategic objectives

related with “Our” basic functions.

1- Water, 24/7 (Without interruptions)

2- Water, drinkable secure and guarantied

3- Water Utility, with positive financial balance or (Zero Subsidy)

4- Tariffs, affordable, transparent and honest for all customers

(Introducing Automation in the water Business) E.g. “Method of Tele-Measurement and Control for Water Utility Companies” is a Modern Method.

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SERVICE QUALITY

Business

Conditions and Basic Relations.

Condition 1: For the water drinkable is; Water safe, hygienically secure at the source.

(Guarantied in All water sources of the cities in Albanian water systems) Exclusion was Delvina with Vrizi spring

Condition 2: Water is guarantied only when the supply is secure 24/7, no interruption in the supply.

(The water is secure from outside pollutions when the water is into network)

Condition 3: Water obligatorily has to treat with disinfectants. For prophylaxis reason as per standard

(Disinfection with dosing pumps into main pipelines)

Condition 4: Water has to control by the WUs, by analyzing water quality according to Approved Schemes.

(Each WU must have the water healthy program, an water lab and strict relation with health authorities)

Condition 5: Water has NOT !, to use for drinking, if before is stored in the uncontrolled private tank.

(The water tanks has to eliminate, or to set up specialized groups for maintaining private tanks or pipelines)

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Reduce Electrical energy in order to contribute

toward water cost, lower than water tariffs and

increase the water production to increase the supply hours.

Reduce drastically the amount of the NRW.

“The objective was that, NRW in the level of 40%

until year 2018”

Reduce the labor costs in order to have WUs

financially sustainable and professionally capable.


Energy costs that make up 30-35 % of the direct operating costs, in several cases even well above 50% and generally indicates 1,10 kWh/m3 water

produces.

- Pumping System Efficiencies, of many existing systems assessed, are well below 50% of original efficiency.

(Analyzing the efficiency of each pumping station/Pump in Operation and the combination of Pumps – Main transmission pipeline in different scenarios).

- Major opportunity in Energy Optimization to cut down on energy use (e.g. NRW, reservoir locations, zoning, etc.)

- Assets and operational data for pumping system generally not freely available (to be registered in details and easy data utilizable)

- IRR (simple payback period) of most of the identified measures range from

1 to 3 and some until 5 years.

The feu cases more than 10 years, it is foreseen different treatment.


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12/10/2019 EnMS a tool for improvement in the water service sector

7


Plant (electrical devices) Energy Audit Zone III

Water source

Water

reservoirs

Energy Efficiency Zone I

Energy Optimization

Zone II

In the water systems are basic elements of the technical aspect of the EnMS. Consisting to:

- Documentation, - Monitoring, - Information and - Organization

Looking at the Four Operational aspects/components, it is imperative at the WU to:

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- Set up a monitoring, documentation, evaluation “processes”, that must be in the heart of operations, by starting with:

- Measuring Variables and - Registering Data and Assets.

- “ Processes” combined into platform, obligatorily will produce Indicators and realistic situation/ knowledge. Analyze Performance Indicators and Plan and prepare for interventions / implementation.

- Evaluation of the ongoing progress, toward goals and 4 strategic objectives.

Plan - Do – Check - Act


10 - Steps Approach

1. DEFINE MAIN CHALLENGES (OBJECTIVES)

2. SYSTEM INFORMATION (DATA CAPTURE - SYSTEM)

3. OPERATIONAL INFORMATION (DATA CAPTURE - OPERATIONS)

4. SITUATION ASSESSMENT (ENERGY SCANS)

5. TECHNICAL OPTIONS (COST BENEFIT ANALYSIS)

6. FEASIBILITY STUDY

10. MONITOR & COMMUNICATE OUTCOMES


Energy refers to the Basic Electric Energy Unit equal to one kilowatt of power supplied from an electric circuit / Greed, for one hour.

Measured in kilowatt-hours (kWh).

Serve as basis for investment in improving Efficiency of Electrical Energy in a WU.

Helps an (WU) to continuously and systematically improve it’s Energy Performance

Cover elements for; creating - Energy Policy, and - Achieving Strategic Objectives.

Includes organizational structures required for; implementing - Energy Management.

Formulates; - Energy Policy Planning and - Operation.

Monitor by measuring, implementing technical “Control” and Correction based on Internal Audits.


Energy Costs are seen as and must / will, be subsidized.

None, Feels Responsible for Energy matters.

Sub-systems, are not inspired because the company structures must be change.

Employees even not refusing to be involve in the processes as:

- Optimization, - Efficiency, - Audit, in fact respond to further analysis with skepticism.

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EnMS a tool for improvement in the water service sector 14


The ideal part of energy and the water is “receiving and losing” by moving from the source to the

reservoirs, using the energy of the pumps for pushing it. This means simply the analyze of the used energy, in a part of the system, that is

Pumps – Transmission main – Reservoirs

1- Operating individual pump or combinations of pumps as efficiently as possible 2- Shifting pumping to periods of lower cost (When the energy tariff is differentiated in the time)

3- Avoiding or minimizing electric utility demand charge, in this presentation,

Definition of Optimization

An act, process, or methodology of making something (such as a design, system, or decision) as fully perfect, functional, or effective as possible

Definition of the Energy Optimization in the Water Systems

An analyze and intervention for reducing the Energy into the Water, that is use during that part of the system as, (Reservoir to the Consumer, including the Water Network).


It is assumed:

- More than half, (50 – 60 %) of the reported NRW (Non-Revenue-Water) is due to technical losses from leaks and bursts.

- At list half of Technical Losses can be reduces through focusing measures in the network

- The first step is pressure reductions and balances at the network that can reduce until 14 % of the NRW in the conditions of Albanian water sector.


Option related that can be reached by constantly introducing and applying:

- Integrated Cost Benefits Analyze (ICBA) implemented at the WU,

The electricity consumption in Albanian water sector, takes round 30 – 35 % of the water service running cost, and in some cases that goes over 50%.

Issues related to Extra Consumption Electricity for water service:

- The water supply hours round 12 h/24h

- Lack of trust in water drinkable, healthy and secure supplied by the water utilities.

- NRW is still round 70+%.

- Huge debts accumulated, in relation to electrical energy consumption


Application of Energy Efficiency Program only, is not sufficient when talking about energy consumption reduction.

Indicators and variables related energy, in addition overall Utility Performance has to monitor frequently.

E.E can solve only a part of the electrical energy consumption problem, and to solve all needs to see it integrated, in a valid Platform.

Called EnMS. “Energy Management System”.


EnMS platform proposed, coordinates three main programs, related with energy.

A- Energy Efficiency, B- Energy Optimization and C- Energy Audit.


Save water and save the Potential Energy of the water Energy Optimization as concept is energy, used in the “segments” of the hydraulic systems,

“Water Reservoirs - End Users”

To be capable in Energy Optimization, it is necessary to be familiar with different “ Water Programs”

EPANET, LOOP, Water Balance, WRAP, MAT, WOBIS, ECAM, other, consolidated under

an Automation Program with frequently remote transmission data.

- Is a continuous process that must be introduced at the WUs. - Deals with frequent controls and continuous monitoring of devices and equipment. - Assures optimal operational technical parameters in place, maximum efficiency and minimum operational costs of electro - machines. - Deals with administrative and managerial processes of energy and saving including Electrical bill as well.


ELECTRO – PUMP

IS A MACHINE THAT COMPOSED BY TWO MAIN PARTS,

A- ELECTRICAL ENGINE AND

B- PUMP

Life Cycle Costs for pumping system have shown that: - The overall costs are due to the investment cost for the implementation goes not more than 5%

- A proper maintenance costs over the life time 10% .

- Costs that a utility incurs from a pumping system are related to energy costs by engaging 85% .

Therefore, using more expensive energy efficient motors pays off over the life-cycle and ensures lower operating costs.


When Scanning a WU, in our case Pumping Station,

1- Absence of pump specification data to assess pump performance

2- Difficulties in flow measurement, flows are often

estimated even not calculated

3- Improper calibration of pressure devices & measuring instrument


Pump shaft power (Ps) is actual horsepower delivered to the pump shaft

Pump shaft power (Ps) Ps= 𝑯𝑯𝑯𝑯(𝜼𝜼𝑷𝑷𝑷𝑷𝑷𝑷𝑯𝑯)

Hydraulic power (Hp) = Q (m3/sec) x Total head. Pump output/Hydraulic/Water horsepower (Hp) is: liquid horsepower delivered by the pump

Pump Efficiency, in this presentation, is with symbol (ηPump)

Pump efficiency (ɳ Pump) = Hp / Ps


- SELECTING THE RIGHT PUMP/S (Water demand, main transmission, water reservoir volume

and pick factor must consider when selecting pump)

- CONTROLLING THE FLOW RATE BY SPEED VARIATION (VFD)

(Use smart bulk meters, electric smart manometers, register hourly the measured variable parameters, pressure reduction)

- ELIMINATING FLOW CONTROL VALVE

(The idea is to eliminate local head)

(Eliminate only when the soft starters are installed in the controlling, protecting and commending panel)

- ELIMINATING BY-PASS CONTROL (CASE OF PATOS)

- PUMPS IN PARALLEL TO MEET SHIFTING WATER DEMAND

(Refer to operational curves of the pump and pumps when

in parallel, calculate the kWh/M3 in each case)


- The EnMS is a valid platform for analyzing Water Systems.

- The EnMS as open Platform accepts other concepts. (e.g. GHG calculation, CBA and IRR)

- It is a must to introduce in the daily operations of the WUs and train the staff in order to

understand the importance and benefits of each program component.

- It is imperative demand to implement qualified actions,

all interventions must be based on EU standards. (e.g. e – pumps)

- The management of the WUs must base the operation on the EnMS, to reach the

objectives targeted in the Strategic Business Plans and improve water services.

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SHUKALB & SHUKOS

Are the bodies with capacities for training and qualifying staff who will be ready

for fulfilling the tasks at the WUs.


reducing the amount of electricity consumption in water

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